The Happy Sumo is a Japanese restaurant. Among the restaurant's menu offerings are all kinds of sushi, including fugu, which can be fatally poisonous if not properly prepared. The Master Sushi Chef is the only person at the restaurant qualified to prepare fugu. The restaurant also offers karaoke. It is located on Elm St.

In S02E11 "One Fish, Two Fish, Blowfish, Blue Fish" Lisa convinces the family to try a new sushi restaurant. An error by an apprentice chef leads to Homer eating a poisonous blowfish. Dr. Hibbert gives Homer twenty-four hours to live and he sets about placing his affairs in order.

Guest Voices

George Takei as Akira
Sab Shimono as the [[Master Sushi Chef (The Simpsons)|Master Sushi Chef]
Joey Miyashima as Toshiro
Diana Tanaka as the Hostess