Sachi's Monstrous Appetite (Japanese: あの人の胃には僕が足りない, Hepburn: Ano Hito no I ni wa Boku ga Tarinai) is a Japanese manga series written and illustrated by Chomoran [ja].

It was serialized in Kodansha's seinen manga magazine Monthly Morning Two [ja] from February 2018 to January 2021, with its chapters collected in six tankōbon volumes.

Written and illustrated by Chomoran [ja], Sachi's Monstrous Appetite was serialized in Kodansha's seinen manga magazine Monthly Morning Two [ja] from February 22, 2018,[3] to January 22, 2021.

[4] Kodansha collected its chapters in six tankōbon volumes, released from July 23, 2018,[2] to March 23, 2021.

[5] In North America, the manga has been licensed for English release by Kodansha USA.