Urusei Yatsura - Season 1 - Eps 69: Those Buy-Eaters Gather Round!
Lum, Ataru, Shinobu and the rest of the Tomobiki student body - except for Mendo and his small gang of "good kids" - fight a new school rule which forbids students to leave the campus to eat lunch at fast-food joints.
About Urusei Yatsura

Title: Urusei Yatsura
First Air Date: 1981-10-14
Last Air Date: 1986-03-19
Status: Ended
Rating: 7.6/10 (from 36 votes)
Language: JA
Seasons: 2
Total Episodes: 218
Network: Fuji TV
Genres: Animation, Comedy, Sci-Fi & Fantasy, Drama
Production Companies: Pierrot, Studio Deen, Kitty Films
Synopsis
The invasion of an alien race known as the Oni begins a new life for Ataru Moroboshi, a lecherous trouble-making tenth grader in the small town of Tomobiki. After unwittingly proposing to the Oni princess Lum Invader instead of his sweetheart Shinobu, Ataru becomes a conduit for aliens arriving on Earth, causing all sorts of havoc for him and his companions, not to mention his own reputation!
Cast

Toshio Furukawa
Ataru Moroboshi

Fumi Hirano
Lum

Akira Kamiya
Syutaro Mendo

Saeko Shimazu
Shinobu Miyake

Kazuko Sugiyama
Ten

Machiko Washio
Sakura

Ichiro Nagai
Sakurambou

Noriko Ohara
Oyuki

Yuko Mita
Benten

Yō Inoue
Ran