- Chapter 17.5: Vol.4 chapter 17.5 : Extra 5 - Project X [End] 6 years ago
- Chapter 17.4: Vol.4 chapter 17.4 : Extra 4 - Friend Diary 6 years ago
- Chapter 17.3: Vol.4 chapter 17.3 : Extra 3 - Dreadful Homework 6 years ago
- Chapter 17.2: Vol.4 chapter 17.2 : Extra 2 - I\'ve Got To Go To School! 6 years ago
- Chapter 17.1: Vol.4 chapter 17.1 : Extra 1 - The Inogami Family 6 years ago