Wada is a briefly appearing and anonymous friend of Yoshinori Kiyota, Hina Nemoto, and Akane Okada. He does not appear in the anime; his roll and name is taken by Suzuki despite the fact the depiction of Suzuki looks more like him than the manga Suzuki. He does not receive his name until Chapter 135. He takes a more significant roll when he chats with Tomoko about manga in Chapter 144.
Wada appears pleasant, though he does not have a significant role until Chapter 144 where he happily chats with Tomoko about manga.
Wada wears his apparently brown hair long in the manga. Tomoko describes him as a "shota.''
- None: his character appears taken over by Suzuki.
- Volume 1: Chapter 4
- Volume 14: Chapter 130
- Volume 15: Chapters 135, 144, 147, 150
- Volume 16: Chapters 156, 157
- TBA: Chapters 163, 165
Strikethrough episodes or chapters indicate the character was mentioned but did not make a physical appearance)
Other than noticing that Tomoko is wearing their high school uniform back in Chapter 4, they have little interaction. However, Wada does not in Chapter 144 that he knows her, and he does not seem to find her strange. When his friend Kiyota remarks that they both read Shonen Jump, he initiates a conversation with Tomoko. He appears pleasant, and while Tomoko notes to herself that theirs were the longest conversation she has had with a boy that is not her brother, she also did not feel her heart "skip a beat," and fears she has no future with a "shota."
Yoshinori Kiyota, Oka, Hina
Kiyota indicates to Tomoko that he, Oka, and Wada have shared classes together. For his part, Wada recalls Tomoko. Hina knows him enough to tease Tomoko about her conversation with him.
- Another character who begins anonymous, has his name revealed, then eventually interacts with Tomoko.
- He shares his name with Chiba Lotte Marines outfielder Koshiro Wada.
|Female Characters||Tomoko Kuroki | Shiki Futaki | Anna Haruna | Shizuku Hirasawa | Akari Iguchi | Hikari Itō | Megumi Imae | Asuka Katō | Kayo | Kotomi Komiyama | Mrs. Kuroki | Koharu Minami | Miyazaki | Nagi | Miho Narita | Yū Naruse | Hina Nemoto | Ogino | Akane Okada | Reina | Fūka Sasaki | Kiko Satozaki | Sayaka | Yuri Tamura | Mako Tanaka | Emiri Uchi | Masaki Yoshida|
|Male Characters||Tomoki Kuroki | Aomatsu | Art Teacher | Hatsushiba | Homeroom Teacher | Jun Ishimine | Kakinuma | Yoshinori Kiyota | Kosaka | Mr. Kuroki | Suzuki | Nico Tanigawa | Wada | Yocchan|
|Minor and Unnamed||Minor and Unnamed Recurring Characters|
|Manga Volumes||1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20|
|Anime Episodes||1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | OVA|