Sakurai is a student in the same class as Nishikata and Takagi.
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| Main | Takagi • Nishikata |
|---|---|
| Supporting | Mano • Nakai • Sanae • Yukari • Mina • Takao • Kimura • Hamaguchi • Houjou • Sumire • Tanabe-sensei |
| Minor | Sakurai • Tunnel Fisherman • Tunnel Fishergirl • Tunnel Misc • Principal • Mano's Friend • Class 4-2 Unnamed Girl |
| Spin-off | Chi • Ooshiro • Chi's Friend |