Haiguusha Series: Okome-chan.
ハイグウシャシリーズ お米ちゃん。
A small insect-sized man named Little Rice-chan has developed feelings for a human boy who loves him and has moved into the boy's family home, an unusual situation for the household. As if this were not strange enough, Rice-chan is also pursued by other admirers and companions, all of whom, for unclear reasons, are drawn to him.