Ep. 8: The Nakanos examine family history while questioning if all twins look identical.
Aired on August 28, 2015

The Nakanos gather to review their family history. During this process, they discuss whether all twins necessarily look the same. The episode focuses on the siblings as they explore these memories and observations together.
Episodes
- Ep. 4 · The Nakono Siblings Unite to Complete Their Weekly Grocery Shopping List
- Ep. 5 · Building Five features Satsuki in the anime clock narrative
- Ep. 6 · Building Six explores the fundamental necessity of learning multiplication tables in elementary school
- Ep. 7 · The Pool Opens at Building Seven as Siblings Enjoy the Water
- Ep. 8 · The Nakanos examine family history while questioning if all twins look identical.
- Ep. 9 · Building Nine explores the motivations behind the characters' shared passion for playing pranks on one another.
- Ep. 10 · Mutsuki Makes a Request in Building Ten
- Ep. 11 · Building Eleven: How Yayoi Nurses?!
- Ep. 12 · The connection between Haruki and his sisters is explored within Building Twelve