SEASON 4 • EPISODE 51
Urusei Yatsura
"Good-bye Onsen-Sensei!? Tearful Good-bye Marathon Banquet!"
Date Aired: Dec 04, 1985
Onsen is leaving, and Lum organizes a goodbye ceremony. Before he goes, he has unfinished business to attend to... namely revenge for all the students' hijinks over the years.