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Trinity's Extracurricular Activities

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Overview

In Search of the Hidden Heritage - Trinity's Extracurricular Activities (隠されし遺産を求めて～トリニティの課外活動～) or Trinity Extracurriculars: In Search of Hidden Ruins on Global, is the 27th event in Blue Archive, set on a deserted island off the coast of Trinity, featuring Koharu, Hanako, Ui and Hinata.

Blurb[]

Ui was caught secretly copying the Sisterhood's scriptures. Thanks to Hanako's mediation (?), she's been given a small task to make it up to the Sisterhood... An expedition to a deserted island off the coast of Trinity!

⁠

“There's no time to waste, Sensei! Let's go!”

~ to Sensei, Visiting

“As long as I'm here, there'll be no cutting corners!”

~ to Sensei, Visiting

“Eek! You scared me, Sensei!”

~ to Sensei, Tapping

“Why do you keep doing that...? Leave me alone.”

~ to Sensei, Tapping

“Uh, seriously! If there's something you need, just tell me!”

~ to Sensei, Tapping

“Hm? What's going on?”

~ to Sensei, Tapping

⁠

“The summer is so hot... Even standing here doing nothing is exhausting...”

~ to Sensei, Visiting

“Over here, Sensei. Preparations for the investigation have been made.”

~ to Sensei, Visiting

“S-Sensei? Wh-What's wrong?
Is there something on my face?		”

~ to Sensei, Tapping

“Even if you suddenly call me like that...”

~ to Sensei, Tapping

“If you need anything, just tell me in person...”

~ to Sensei, Tapping

“Even though I don't really like being outside...
...it wasn't too bad since I got to be alone with you.		”

~ to Sensei, Tapping

⁠

“Shall we get started?”

~ to Sensei, Visiting

“This is the start of a fun summer event. Heehee!”

~ to Sensei, Visiting

“Huh? What is it?”

~ to Sensei, Tapping

“Wow, Sensei, I've never seen this side of you. ♥”

~ to Sensei, Tapping

“Will you remember everything you did here?”

~ to Sensei, Tapping

“Just be ready...when you return. ♥
Heeheehee... ♥		”

~ to Sensei, Tapping

⁠

“Th-The preparations are complete.
Let me know if there's anything you need!		”

~ to Sensei, Visiting

“I've been waiting for you, Sensei!”

~ to Sensei, Visiting

“It's hot... And the sun is so strong...
I-If you want, you may borrow my hat.		”

~ to Sensei, Tapping

“Oh? Sensei? What's wrong?”

~ to Sensei, Tapping

“Uh, um... Sensei? If...you need something, just tell me...”

~ to Sensei, Tapping

“Heehee! S-Sensei! Th-That tickles!
Hee! Ahahaha!!		”

~ to Sensei, Tapping


Event Details[]

Information[]

⁠

  • Event Period: July 24th, 2023 JST ~ August 09th, 2023 JST
  • Rewards Period: July 24th, 2023 JST ~ August 16th, 2023 JST
  • Challenge Stage: July 25th, 2023 JST
  • In this Event:
    • Table RPG has been added.
    • Starting from this event, there will be 3 Challenges instead of 5.
      • Strategy Map has been removed.
      • Added 1 EX-Challenge.
    • Shimoe Koharu (Swimsuit ver.) 1★ can be recruited.

Currency Boost[]

Event Currency
Bonus Drop Rate

Event Currency

Battle through to earn event currencies and points.

Bonus Drop Rate

Certain students will boost the drop rate of the event currencies.

Event Currency
Bonus Drop Rate


+25%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+25%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+25%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+15%
+25%
+25%
+25%
+20%
+20%
+20%
+20%
+15%
+15%
+15%
+15%
+15%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%
+10%


Event Guide[]

  • Stages are likely required to be cleared twice. If teachers don't have the upgraded event students; It's easier to clear the stage twice: to get the 3★, bonus student drops, and thus the maximum reward.
  • Once an area has been perfectly cleared, at 3★. The stage reward given is always the highest recorded drop, including the bonus from the students.
    • Using the "Skip or Rush" function will record the highest drop.
  • In this event, teachers can farm a lot of items:
    • Materials (Ooparts)
      There are 4 types of materials that teachers are able to obtain and each can be obtained from tier 1 to tier 4. There is no event bonus for these materials.
      • Nimrud⁠ ~ Quest 1 (T1/2) / Quest 5 (T2/3) / Quest 9 (T2/3/4)
      • Voynich⁠ ~ Quest 2 (T1/2) / Quest 6 (T2/3) / Quest 10 (T2/3/4)
      • Crystal Haniwa⁠ ~ Quest 3 (T1/2) / Quest 7 (T2/3) / Quest 11 (T2/3/4)
      • Baghdad⁠ ~ Quest 4 (T1/2) / Quest 8 (T2/3) / Quest 12 (T2/3/4)
      • Wolfsegg⁠ ~ Map 1 (Stone Maze)
      • Antikythera ⁠ ~ Map 2 (Underground Ruins)
      • Golden Fleece⁠ ~ Map 3 (Forgotten Lighthouse)
      • Roman Dice⁠ ~ Map 4 (Deepest Part of The Island)
    • Event Currency
      Generally, event currencies dropped on all quests with the higher difficulty giving out more and can be doubled should teachers bring along students with event bonuses.
      • Parchment Fragment⁠ ~ Quest 9
      • Lemon⁠ ~ Quest 10
      • Old Key⁠ ~ Quest 11
      • Event Point⁠ ~ Quest 12

Stage Detail[]

Story Stages
No. AP Lv Terrain ATK DEF Initial Reward Reward (No Bonus) 3★
01
x10
 No Battle
x1
x50
x50
x1
x20
02
x50
x50
03 12 ⁠
x50
x50
04 13
x50
x50
05 No Battle
x50
x50
06 15 ⁠
x50
x50
07 No Battle
x50
x50
08 17 ⁠
x50
x50
09 18
x50
x50
10 No Battle
x50
x50

Quest Stages
No. AP Lv Terrain ATK DEF Initial Reward Reward (No Bonus) 3★
01
x10
 23 ⁠
x100
x150
x150
x3
x17
x1
25%
x1
15%
x30
02
x100
x150
x150
x3
x17
x1
25%
x1
15%
03
x100
x150
x150
x3
x17
x1
25%
x1
15%
04
x100
x150
x150
x150
x20
x1
25%
x1
15%
05
x15
 45
x200
x300
x6
x24
x1
25%
x1
8%
06
x200
x300
x6
x24
x1
25%
x1
8%
07
x200
x300
x6
x24
x1
25%
x1
8%
08
x200
x100
x100
x100
x30
x1
25%
x1
8%
09
x20
 80
x300
x800
x9
x31
x1
25%
x1
12%
x1
2.1%
10
x300
x800
x9
x31
x1
25%
x1
12%
x1
2.1%
11
x300
x800
x9
x31
x1
25%
x1
12%
x1
2.1%
12
x900
x300
x300
x300
x40
x1
25%
x1
12%
x1
2.1%

Challenge Stages
No. AP Lv Terrain ATK DEF Initial Reward 3★ Seconds Guide
01
x5
 50 ⁠
x70
x70
 100 ブルアカ攻略
02 85 90 ブルアカ攻略
03 88 85 ブルアカ攻略

EX Challenge Stages
No. AP Lv Terrain ATK DEF Initial Reward 3★ Guide
01
x5
 88 ⁠
x5
x5
 ブルアカ攻略

Type Compatibility
DEF/ATK
Normal
Explosion
Penetration
Mystic
Sonic
Normal
 Normal Normal Normal Normal Normal
Light
 Normal Weak Resist Normal Normal
Heavy
 Normal Normal Weak Resist Resist
Special
 Normal Resist Normal Weak Effective
Elastic
 Normal Resist Normal Normal Weak
Damage
Effect Damage Dealt
Weak 2x (200%)
Effective 1.5x (150%)
Normal 1x (100%)
Resist 0.5 (50%)

Table RPG[]

⁠

PG is a new minigame that is played in rounds. Teachers' objective is to find a special type of treasure chest to proceed to the next map.
  • There are a total of 6 regions: Island Interior, Forgotten Lighthouse, Catacombs, Stone Labyrinth, Abandoned Lemon Grove, and Waterfall Hideout. The latter two are hidden areas.
    • There are 2 hidden maps in each round.
  • The objects on the map will be random for every round(?)
  • When teachers move to the next map, they will not be able to backtrack.
  • Treasure chest rewards will change after the fourth round.
  • Teachers may obtain Memories Collection in all six regions, including the hidden areas.
  • Teachers will be able to rush after clearing round 3 which requires 1200 ⁠.
    • Only Map 2 requires 1500 ⁠.
  • Every round, all objects will spawn at random locations with the exception of ⁠.
    • Special Treasure Chest (the objective) will also spawn at a random location.
  • Each map contains 3 ⁠ and only one will allow teachers to move to the next map while the other 2 will reward teachers with ⁠.

⁠ Teachers will require 250 ⁠ to interact with an object. The outcome of the interaction is determined by a dice roll.

Object Type
Object Description
⁠ Wooden Sign

~Triggers an encounter event.
~Teachers will select 1 out of the 3 options and roll a dice to determine the outcome.
~~If teachers succed, they may obtain either ⁠, ⁠ or exclusive items.
~~If teachers fail, they will not receive any rewards and the encounter will end.
~The value needed for each option increases in each map.
~Top Options rewards teachers with low-value items such as ⁠, ⁠ or , ⁠.
~Middle Options usually rewards teachers with exclusive items such as ⁠ or ⁠.
~Low Options rewards teachers with high-value items such as ⁠ or ⁠.

Wooden Sign
Map Name Success Value
Top Option Middle Option Bottom Option
1 Stone Maze 8 13 20
2 Underground Ruins 10 16 22
3 Forgotten Lighthouse 12 18 24
4 Deepest Part of The Island 15 20 24
⁠ Facility

~Triggers a random event.
~Teachers can obtain Exclusive Items without rolling a dice.

⁠ Treasure Chest

~There are 2 types of treasure chests.
~~Normal Treasure Chest will reward teachers with 150K ⁠.
~~Special Treasure Chest will reward teachers with ⁠ and allows them to move to the next map.

⁠ Minion / Boss

~Teachers will battle a minion with 2 HP or a boss with 3 HP.
~250 ⁠ will be consume every turn.
~Teachers can choose to battle or flee on the 1st turn.
~~Should teachers flee, they will need to roll a dice with a value of 8 or higher, and the enemy will remain on the tile.
~~From the 2nd turn onwards, teachers can flee without rolling a dice and the enemy's health will remain the same.
~~~However, teachers are required to pay 250 ⁠ again to re-battle.
~~If teachers choose to battle, they will need to roll a value that is dependent on the enemy and the current map.
~~~Success roll will deal 1 dmaage.
~~~Great Sucess roll will deal 2 damage.
~When teachers' health reaches 0, they can use 600 ⁠ to recover.
~Defeating an enemy will reward teachers with an Exclusive Item that can be seen in the bottom left.

Enemy
Map Name Minion Boss
Flee Success Great Success Flee Success Great Success
1 Stone Maze 8 11 15 8 12 16
2 Underground Ruins 13 17 14 18
3 Forgotten Lighthouse 16 20 18 22
4 Deepest Part of The Island 17 21 19 24
⁠

⁠ There are a total of 8 exclusive items in the minigame. Teachers will start off with a 6-sided dice which will be replaced when they acquire higher tier dice. Teachers are given 4 empty slots to equip items. Should all 4 slots be full, teachers will be unable to equip more items. When teachers utilize the same type of items, it will overwrite the current item. Exclusive item usage will be random.

Item Type
Item Description
⁠ 8 Sided Dice

~A dice that can roll from 1 to 8.
~This item's enhancement effect is applied as soon as it is acquired.
~This item's effect lasts until the round is cleared.
~This item replaces the lower-tier dice.

⁠ 10 Sided Dice

~A dice that can roll from 1 to 10.
~This item's enhancement effect is applied as soon as it is acquired.
~This item's effect lasts until the round is cleared.
~This item replaces the lower-tier dice.

⁠ Chest Detector

~Reveal the Special Treasure Chest (The Objective) on the map.
~The map will glow in purple.

⁠ Freedom Dice

~Adds a fixed value to the dice for all allies for a certain number of times.

⁠ Freedom Marker

~Adds a fixed value to the dice for a certain number of times.

⁠ Instant Lemon Juice

~Restore HP

⁠ Lemon Drink

~Increases MAX HP

⁠ Peroro Plush

~Block damage for a set amount of time

Hidden Map[]

There are 2 hidden maps throughout each round which require teachers to meet a certain condition. Each of the hidden maps will contain 4 Wooden Signboards ⁠ and 1 Normal Treasure Chest ⁠. Teachers are required to step on all the Wooden Signboards in order to obtain the treasure chest.

  • Lemon Farm
    • Found in Map 2 which can be unlocked on the first round.
    • Requires teachers to step onto all the Facilities ⁠.
      • There are 2 Facilities on Map 2.
  • Waterfall Cave
    • Found in Map 4 which can be unlocked on the second round.
    • Requires teachers to step onto all the Wooden Signboard ⁠.
      • There are 6 Wooden Signboards on Map 4.

Map reward[]

Map Reward
Map. Name Round 1 ~ 3 Round 4+'
1 Stone Maze
x2M
x20
x6
x4
x2
x10
x1M
x4
x3
x2
x1
x5
2 Underground Ruins
x2M
x20
x6
x4
x2
x1M
x4
x3
x2
x1
3 Forgotten Lighthouse
x2M
x20
x6
x4
x2
x1M
x4
x3
x2
x1
4 Deepest Part of The Island
x2M
x20
x6
x4
x2
x1M
x4
x3
x2
x1

Achievement[]

⁠

Achievement
No. Requirement Count Reward Rush? Tips
01 Clear mini-game 1 time 1
x200
 No N/A
02 Clear mini-game 2 times 2
03 Clear mini-game 3 times 2
04 Clear story 1 in the event 1
x400
 N/A
05 Clear mini-game "Stone Maze" 1
x600
 N/A
06 Clear mini-game "Underground Maze" 1
07 Clear mini-game "Forgotten Lighthouse" 1
08 Clear mini-game "Deepest Part of the Island" 1
09 Clear mini-game "Lemon Farm" 1
10 Clear mini-game "Cave Behind the Wall" 1
11 Clear 7 event missions 7
x1
 Any 7 missions
12 Clear all Story, Quest, and Challenge stages 25
x1
In Search of a Hidden Heritage
Clear all stages
13 Clear Quest 1 of the event within 75 seconds 75
x450K
 N/A
14 Clear Quest 2 of the event within 75 seconds
15 Clear Quest 3 of the event within 75 seconds
16 Clear Quest 4 of the event within 75 seconds
17 Clear Quest 5 of the event within 75 seconds
x500K
18 Clear Quest 6 of the event within 75 seconds
19 Clear Quest 7 of the event within 75 seconds
20 Clear Quest 8 of the event within 75 seconds
21 Clear Quest 9 of the event within 75 seconds
x550K
22 Clear Quest 10 of the event within 75 seconds
23 Clear Quest 11 of the event within 75 seconds
24 Clear Quest 12 of the event within 75 seconds
25 Clear Challenge 1 of the event within 100 seconds 100
x100
 Guide by ブルアカ攻略
26 Clear Challenge 2 of the event within 90 seconds 90 Guide by ブルアカ攻略
27 Clear Challenge 3 of the event within 85 seconds 85 Guide by ブルアカ攻略
28 Clear 14 or more of the event missions 14
x1
 Any 14 missions

⁠

“Now, let me summarize our investigation findings.”

~ to Sensei, Visiting

“We've come to learn many things.”

~ to Sensei, Visiting

“Hmm... Is there more to investigate?”

~ to Sensei, Tapping

“There's nothing more to discover, not even if you investigated me...!”

~ to Sensei, Tapping

“For you, Sensei...”

~ to Sensei, Claiming Rewards

“This...could be very meaningful.”

~ to Sensei, Claiming Rewards

⁠

“I'm excited to see what's in store for the future.”

~ to Sensei, Visiting

“Everyone is waiting for you, Sensei.”

~ to Sensei, Visiting

“Ah, something like that...in a place like this... ♥”

~ to Sensei, Tapping

“Sensei, did something happen?”

~ to Sensei, Tapping

“Wow, this is quite...”

~ to Sensei, Claiming Rewards

“This was definitely worth all the hard work.”

~ to Sensei, Claiming Rewards

Shop[]

Exchange Shop[]

⁠

⁠

“Is there a particular item you're after?”

~ to Sensei, Visiting

“Take a look around.”

~ to Sensei, Visiting

“S-Sensei... Haha! I-I'm okay... Hahaha!”

~ to Sensei, Tapping

“Oh? Did you have something to say...?”

~ to Sensei, Tapping

“Yes! It's here!”

~ to Sensei, Exchanging

“That... I think that's very good! As expected, Sensei!”

~ to Sensei, Exchanging

“I'm glad you found what you were looking for!”

~ to Sensei, Exchanging

“Th-That's great! I think it's good too.”

~ to Sensei, Exchanging

Parchment Fragment⁠
Total Price ~ 11480
x1
x1
x1
x1
280 Times 170 Times 60 Times 25 Times
⁠ 1 ⁠ 5 ⁠ 20 ⁠ 100
x1
x1
x1
x1
40 Times 30 Times 20 Times 12 Times
⁠ 5 ⁠ 15 ⁠ 50 ⁠ 150
x1
x1
x1
x1
10 Times 10 Times 1 Time 1 Time
⁠ 100 ⁠ 100 ⁠ 200 ⁠ 1000
x1
N/A
⁠ 5

Lemon⁠
Total Price ~ 11950
x1
x1
x1
x1
250 Times 150 Times 50 Times 25 Times
⁠ 1 ⁠ 4 ⁠ 16 ⁠ 64
x1
x1
x1
x1
35 Times 30 Times 25 Times 7 Times
⁠ 10 ⁠ 30 ⁠ 100 ⁠ 250
x1
x1
x1
x1
10 Times 10 Times 1 Time 1 Time
⁠ 100 ⁠ 100 ⁠ 200 ⁠ 1000
x1
N/A
⁠ 5

Old Key⁠
Total Price ~ 14000
x1
x1
x1
x1
150 Times 60 Times 30 Times 15 Times
⁠ 5 ⁠ 15 ⁠ 50 ⁠ 150
x1
x1
x1
x1
150 Times 60 Times 30 Times 15 Times
⁠ 5 ⁠ 15 ⁠ 50 ⁠ 150
x1
x1
x1
x1
10 Times 10 Times 1 Time 1 Time
⁠ 100 ⁠ 100 ⁠ 200 ⁠ 1000
x500
N/A
⁠ 1


Reward Points[]

⁠

Rewards
x10
x10
x800
x2
x2400
x1000K
x4200
x1500K
x7500
x2
x50
x10
x900
x2
x2600
x1
x4400
x3
x8000
x1500K
x100
x5
x1000
x10
x2800
x1
x4600
x3
x9000
x10
x200
x5
x1200
x20
x3000
x1000K
x4800
x1500K
x10000
x1
x300
x10
x1400
x20
x3200
x3
x5000
x2
x11000
x20
x400
x10
x1600
x10
x3400
x3
x5500
x2
x12000
x1500K
x500
x10
x1800
x10
x3600
x2
x6000
x15
x13000
x20
x600
x5
x2000
x2
x3800
x2
x6500
x1500K
x14000
x2000K
x700
x5
x2200
x2
x4000
x15
x7000
x10
x15000
x10
Total Rewards
Currency
x11.5M
x50
Exp Material
x40
x20
x70
x15
x40
x20
x10
x7
Skill Book & Disk
x1

Trivia[]

  • In a developer commentary,[1] it was mentioned that this story was written by Minchul, who was known for great high school comedy within the team.
  • This is the first event that uses the 3 + EX challenges format, instead of the 5 challenges format in previous events.
  • This event happened after the events of Sister and the Magician of the Old Bookstore.

Credits[]

External Links[]

Navigation[]

V • T • E Events
⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠
Special Operation Mini Event
⁠⁠ ⁠⁠
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⁠⁠⁠ ⁠
Conquest Battle Conquest Battle (Rerun)
⁠⁠ ⁠
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