An alien race known as the Oni arrive on Earth to invade the planet. Instead of taking over the planet by force, the Oni give humans a chance to fight for the rights to the planet by taking part in a competition. The computer-selected human player is Ataru Moroboshi, a lecherous, unlucky and stupid high school student from the Japanese city of Tomobiki, and the Oni player is Princess Lum, daughter of the leader of the Invasion force.
古川登志夫
as Ataru Moroboshi
平野文
as Lum
神谷明
as Syutaro Mendo
島津冴子
as Shinobu Miyake
杉山佳寿子
as Ten
鷲尾真知子
as Sakura
永井一郎
as Sakurambou
小原乃梨子
as Oyuki
三田ゆう子
as Benten
井上瑤
as Ran
玄田哲章
as Rei
小山茉美
as Ryoko Mendo
