- Youta Tsunashi
- Rino Juse
- Nozomu Juse
- Kyouko Tsunashi
- Denji Tsunashi
- Sayoko Tsunashi
- Hajime mentions running into Harundo and Kurume at the arcade in chapter 3. They later show up in chapter's 35 and 50.
- Hajime meets up with Haru in chapter 50.
- Track Team Girl and Karrot are both seen attending Kouhei High School in chapter 36. Hajime and Kaoru also visit the same ramen place that Akiko goes to in chapter 9 of Metsuko ni Yoroshiku.