12歳。～ちっちゃなムネのトキメキ～ online kijken met Nederlandse ondertiteling. 12歳。～ちっちゃなムネのトキメキ～ is een Animatie televisie serie met in totaal 2 seizoenen en 24 afleveringen om te streamen en downloaden.
| Sound | Takeshi Ike | Original Music Composer |
| Writing | Miyu Yuzuki | Lyricist |
| Sound | 岩崎元是 | Music Arranger |
| Sound | Machico | Theme Song Performance |
| Writing | Seiji Miura | Lyricist |
| Visual Effects | Takeshi Ike | Compositing Artist |
| Sound | Takuya Watanabe | Music Arranger |
| Sound | Seiji Miura | Original Music Composer |
| Sound | 山谷尚人 | Sound Effects |
| Production | 中村直樹 | Executive Producer |
| Production | 奥野敏聡 | Executive Producer |
| Writing | Maita Nao | Original Series Creator |
| Art | Maita Nao | Original Series Design |
| Production | Hiromasa Minami | Producer |
| Sound | 水希蒼 | Theme Song Performance |
| Sound | 福緒唯 | Theme Song Performance |
| Sound | 荻野沙織 | Theme Song Performance |
| Sound | 巴奎依 | Theme Song Performance |
| Sound | 桜奈里彩 | Theme Song Performance |
| Sound | 広瀬ゆうき | Theme Song Performance |
| Directing | 奥脇雅晴 | Series Director |
| Production | Kaori Itou | Producer |
| Visual Effects | 萩原しょう子 | Character Designer |
| Directing | 羽原久美子 | Assistant Director |
| Sound | 岩崎元是 | Music |
| Sound | 穴井健太郎 | Music Producer |
| Production | Makoto Hujou | Executive Producer |
| Art | Michiko Yoshida | Art Direction |
| Production | 久保雅一 | Executive Producer |
| Production | 弓矢政法 | Executive Producer |
| Camera | 山越康司 | Director of Photography |
| Production | Rie Ukai | Producer |
| Sound | 大隅啓良 | Music Producer |
| Sound | たなかかずや | Sound Director |
| Production | Takemoto Mori | Executive Producer |
| Editing | 小守真由美 | Editor |
| Production | 佐々木礼子 | Producer |
| Art | Toshiko Kaizu | Art Designer |
| Production | Hiroyasu Oyama | Executive Producer |
| Production | 穴井健太郎 | Producer |
| Production | Ryota Kanda | Producer |
| Production | Naohiko Furuchi | Producer |
| Production | Satoru Nakano | Executive Producer |
