Dizi Adı: Urusei Yatsura
Bölüm Adı: The Tearful Diary of Tomorrow - Whose Kid Is This?
Sezon/Bölüm: 1. Sezon 37. Bölüm
Yayın Tarihi: 10 Mar. 1982

Lum acquire’s Ataru’s diary that has written in events that will happen throughout the day. Ataru tries to use it to his advantage, but the records in the diary are not quite how they first read; making use of puns or ambiguous statements.

Mendo finds an alien child in his locker and goes through great lengths to hide it from everyone. Later after everyone has found out, a whole mob of these alien children arrive, just for Mendo.