Satoru is the youngest brother in a mutant cannibal family endowed with supernatural abilities, devoted to the deity Zanta Maria in the horror manga "Kichikujima." He is the sibling of Kaoru, the eldest son; Mari, the eldest daughter; and the twins Anna and Kanna.

A comedic spin-off anime reinterprets the character in a slice-of-life context, eliminating all horror and supernatural elements. This version presents super-deformed characters in ordinary situations, with Satoru acting solely as a comedic figure, detached from the original lore and narrative continuity. The series comprises 50 one-minute episodes, each featuring standalone scenarios unrelated to the manga's plot or character development.

No official media beyond the original manga and this specific spin-off anime includes the character.