Toilet ga Hanako-san

Comedy Seinen

It's Toilet Girl Hanako. Yes, she's a walking, talking toilet.

Koushuu Toilet Danshi: Hajimete no, Aokan

Yaoi

Fushigi Tsuushin: Toilet no Hanako-san

Mystery Horror School

Every elementary school has lot's of mystery especially about ghost. In this series you will get a different image of mystery that given by another school mystery series.

Isekai no Toilet de Dai wo Suru.

Comedy Fantasy Seinen

The manga centers on a boy who is transported to a fantasy world, and goes on adventures there. While adventuring with his party members in a certain dungeon, he suddenly needs to go to the bathroom, and is directed by his party members to a supposed toilet of the gods. (Source: ANN)