- Chapter 4: Vol.1 chapter 4 : Yellow Day ~ Extra 7 years ago
- Chapter 3.2: Vol.1 chapter 3.2 : Lost Child 3 7 years ago
- Chapter 3.1: Vol.1 chapter 3.1 : Lost Child 3 7 years ago
- Chapter 2.3: Vol.1 chapter 2.3 : Lost Child 2 7 years ago
- Chapter 2.2: Vol.1 chapter 2.2 : Lost Child 2 7 years ago