Summary Akuma Jiten from Kainu Manga
Akuma Jiten summary: Starting at the age of 16, Hiroyuki begins a fresh adventure by attending high school and living on his own. During his quest for a rental home, he receives an incredible proposal for a slightly dilapidated property. However, the condition is that he must share living space with a delightful demoness named Milky Way, who needs a helper. While Hiroyuki acclimates to his new surroundings, he finds himself immersed in a realm of romantic entanglements, as well as heaven and hell. What was once a peaceful existence for him is now no longer tranquil.