- Chapter 31.5: Vol.4 chapter 31.5 : Pilot 6 years ago
- Chapter 31: Vol.4 chapter 31 : Plowing Towards Tomorrow!! 6 years ago
- Chapter 30: Vol.4 chapter 30 : 50 Years Ago was Really Serious! 6 years ago
- Chapter 29: Vol.4 chapter 29 : The Blank Space of 50 Years!! 6 years ago
- Chapter 28: Vol.4 chapter 28 : Wedding Anniversary Panic! 6 years ago