初恋モンスター もうちょっとだけ続くんじゃ

Kaho Nikaidou has moved into a dormitory away from home when a boy pulls her out of a truck's path; she falls for Kanade Takahashi on the spot, then learns he is her landlord's son and a fifth grader. This episode never aired: it was animated as a bundled extra with the eighth volume of the manga, a supplement to the televised run rather than an entry point to it.