While performing in a student film, Ataru cuts down Tarozakura, a large, ancient cherry tree. Strange things begin to happen all across Tomobiki: a mountain appears out of nowhere, spring changes to winter, and Lum loses her powers, while those around her act as if she doesn't exist.
| Actor | Role |
|---|---|
 Toshio FurukawaAtaru Moroboshi (voice) | Ataru Moroboshi (voice) |
 Fumi HiranoLum (voice) | Lum (voice) |
 Akira KamiyaShutaro Mendo (voice) | Shutaro Mendo (voice) |
 Issei FutamataAkira (voice) | Akira (voice) |
 Shinji NomuraHiroyuki (voice) | Hiroyuki (voice) |
 MugihitoFather Mendo (voice) | Father Mendo (voice) |
 Saeko ShimazuShinobu Miyake (voice) | Shinobu Miyake (voice) |
 Sumi ShimamotoAsuka Mizunokoji (voice) | Asuka Mizunokoji (voice) |
 Bin ShimadaTobimaro Mizunokoji (voice) | Tobimaro Mizunokoji (voice) |
 Kenichi OgataFather Moroboshi (voice) | Father Moroboshi (voice) |
 Natsumi SakumaMother Moroboshi (voice) | Mother Moroboshi (voice) |
 Michihiro IkemizuOnsen-Mark (voice) | Onsen-Mark (voice) |
 Tomomichi NishimuraPrincipal (voice) | Principal (voice) |
 Kazue KomiyaRan (voice) | Ran (voice) |
 Machiko WashioSakura (voice) | Sakura (voice) |
 Ichiro NagaiSakuranbou (voice) | Sakuranbou (voice) |
 Shigeru ChibaSatoshi (voice) | Satoshi (voice) |
 Akira MurayamaKosuke Shirai (voice) | Kosuke Shirai (voice) |
 Kazuko SugiyamaTen (voice) | Ten (voice) |