Maou ga Yachin wo Haratte Kurenai

Maou ga Yachin wo Haratte Kurenai (魔王が家賃を払ってくれない, lit. "The King of Darkness Doesn't Pay the Rent.") is a light novel series by Hiro Itou with illustrations by Sakana. A manga adaption with art by Seri Minase was serialized in Age Premium.