Takumi and Gii are now a couple, but Takumi is still uncomfortable with showing affection. Not only that, but Takumi grows jealous when Gii starts paying attention to a good-looking first year student. Is Gii's love really that fickle?
Unfortunately the movie Takumi-kun Series: The Rainbow-Colored Glass is not yet available on Disney Plus.
| Directing | Takeshi Yokoi | Director |
| Production | Takashi Anzai | Executive Producer |
| Production | Kazushi Miki | Executive Producer |
| Writing | Shinobu Goto | Original Story |
| Sound | Koji Endo | Original Music Composer |
| Editing | Takeshi Yokoi | Editor |
| Art | Hiroshi Maruyama | Art Direction |
| Sound | Kazuyuki Tsuchiya | Sound Recordist |
| Camera | Satoshi Shimomoto | Director of Photography |
| Production | Yoichi Kobayashi | Executive Producer |
| Production | Kazushi Miki | Producer |
| Production | Takeshi Katayama | Producer |
| Production | Mei Takayama | Producer |
| Writing | Hiroko Kanasugi | Screenplay |
