Co-Research with Chief Librarian (2023 December)

## Introduction

January 9 2024 13:59 +0900 until the event is over!This event has ended!
*Beat the enemies in the furthest reaches of the target tainted book and acquire coins.
After using "Chief Librarian's Fan," [the player] is able to delve as many times as needed until coins are acquired.*

This is a special research event which will run from 2023/12/30 to 2024/01/09 13:59 JST. The purpose of this event is to accumulate coins.

## Gameplay

Access this event by **clicking on the event banner** on the main library screen or the Book Delve section.

The event gameplay is similar to tainted book delving. However, you will need to use up a Chief Librarian's Fan to access the event bookshelf, and you will only collect coins from a delve once for each fan.

The upper tab **Mission Outline** (任務概要) summarizes the objective of the event and lists info of the event's Tainted Books and how many coins each book gives upon successful delve. There are also two yellow buttons "**To Decor**" (内装へ), which takes player to the Office, and "**To Strolls**", taking player to Strolls. The brown button "**Help**" has the short how to play guide you can see on this page.

The bottom tab **Rewards List** (報酬一覧) tells you what are the rewards of this event and how many delves (fans) they will require.

You will receive **one fan per day** by simply logging in, and you may also purchase fans in the Shop.

Click the big yellow button "**To the research's target Tainted Books**" (研究対象の有碍書へ) on the event's main screen to access the event bookshelf (this requires one Chief Librarian's Fan). You will note that there are four books: Book 1 (on the left) is of the lowest difficulty, and Book 4 (on the right) is of the highest. As stated on the event page, Book 1 yields 100 coins per completed delve, Book 2 yields 200, Book 3 yields 300 and Book 4 yields 400 coins.

Delve into a book of your choice and clear it to receive coins.

In case player already owns the decor that is available as a reward, upon receiving the reward again there will be 700 Coins and 3 Soul Gears presented instead.

## Tips

* If your team is not strong enough to clear a book you are trying to delve into, go back to the book later when you have strengthened your writers. Make sure every team member has as high rarity and leveled outfit as possible, the writers' level is high enough and they are properly Blossomed. Changing the team's memoria cards may also improve their performance.
* As stated above, one fan is officially used up only when you have successfully collected coins from a delve.

## Tainted Books

* Beginner Difficulty
* Intermediate Difficulty
* Advanced Difficulty
* Super Advanced Difficulty

 **Research Report - Beginner**
 **研究報告書　初級**

 by Chief Librarian

 **Possible Item Node Drops**

  Literature Soul (Small)
 Thoughts Soul (Small)
 Words Soul (Small)

**Node Information**

**Node**
**Taints Formation / Resources**

**A**
 Concealed Guardian No. 0   /   Concealed Guardian No. 0

**B**
 Concealed Guardian No. 0   /   Concealed Guardian No. 2   /   Concealed Guardian No. 0

**C (Boss)**
 Concealed Guardian No. 1   /   Concealed Guardian No. 3

 **Research Report - Intermediate**
 **研究報告書　中級**

 by Chief Librarian

 **Possible Item Node Drops**

  Literature Soul (Small)
 Thoughts Soul (Small)
 Words Soul (Small)
 Literature Soul (Medium)
 Thoughts Soul (Medium)
 Words Soul (Medium)

**Node Information**

**Node**
**Taints Formation / Resources**

**A**
 Concealed Guardian No. 2   /   Concealed Guardian No. 2

**B**
 Concealed Guardian No. 3   /   Concealed Guardian No. 3

**C (Boss)**
 Concealed Guardian No. 2   /   Concealed Guardian No. 0   /   Concealed Guardian No. 2

 **Research Report - Advanced**
 **研究報告書　上級**

 by Chief Librarian

 **Possible Item Node Drops**

  Literature Soul (Small)
 Thoughts Soul (Small)
 Words Soul (Small)
 Literature Soul (Medium)
 Thoughts Soul (Medium)
 Words Soul (Medium)

**Node Information**

**Node**
**Taints Formation / Resources**

**A**
 Concealed Guardian No. 3   /   Concealed Guardian No. 1

**B**
 Concealed Guardian No. 3   /   Concealed Guardian No. 3   /   Concealed Guardian No. 0

**C (Boss)**
 Concealed Guardian No. 5   /   Concealed Guardian No. 3   /   Concealed Guardian No. 3

 **Research Report - Super Advanced**
 **研究報告書　超級**

 by Chief Librarian

 **Possible Item Node Drops**

  Literature Soul (Small)
 Thoughts Soul (Small)
 Words Soul (Small)
 Literature Soul (Medium)
 Thoughts Soul (Medium)
 Words Soul (Medium)
 Literature Soul (Large)
 Thoughts Soul (Large)
 Words Soul (Large)
 Coin x400

**Node Information**

**Node**
**Taints Formation / Resources**

**A**
 Concealed Guardian No. 5   /   Concealed Guardian No. 5   /   Concealed Guardian No. 5

**B**
 Concealed Guardian No. 3   /   Concealed Guardian No. 5   /   Concealed Guardian No. 3

**C (Boss)**
 Concealed Guardian No. 3   /   Concealed Guardian No. 3   /   Concealed Guardian No. 3