Ane Naru Mono

Ane Naru Mono (姉なるもの, lit. "The Demon Who Became My Sister") is a manga series written and illustrated by Pochi. It is serialized in Dengeki G's Comic.

Plot
A heart-warming story of how a neglected orphan, Yuu, has been blessed with the offering of a free wish by a demon, and he simply asks her to become his older sister...