Kakinuma is shown to be somewhat awkward and nerdy, never really standing out much.
Kakinuma has a bowl hairstyle and wears rectangular framed glasses.
- Volume 08: Chapters 67, 68, 69
- Volume 09: Chapters 82, 88
- Volume 10: Chapter 95
- Volume 11: Chapters 99, 105,
- Volume 14: Chapter 144.1
Strikethrough episodes or chapters indicate the character was mentioned but did not make a physical appearance)
Kakinuma is usually shown to be with a couple of other nerds playing video games. None of the others have been named, and not much is known about them or their relationship.
|Female Characters||Tomoko Kuroki | Yū Naruse | Mrs. Kuroki | Kotomi Komiyama | Megumi Imae | Kiko | Ogino | Yuri Tamura | Masaki Yoshida | Mako Tanaka | Emiri Uchi | Hina Nemoto | Akane Okada | Asuka Katō | Shizuku Hirasawa | Akari Iguchi | Sayaka | Koharu Minami | Hikari Itō | Futaki | Miyazaki|
|Male Characters||Tomoki Kuroki | Mr. Kuroki | Kakinuma | Yoshinori Kiyota | Kosaka | Hatsushiba | Suzuki | Jun Ishimine | Homeroom Teacher | Art Teacher | Aomatsu | Yocchan | Nico Tanigawa | Wada|
|Manga Volumes||01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14|
|Anime Episodes||01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | OVA|