Ren Hoshi is a young adult who uses the breath of the stars. After his parents died by a demon and turned his friend into one of them, Ren swore that he would protect people from monsters that only come out at night and find a way to make his friend human again. On the way of his adventure, he does not realize that he has attracted the attention of many people. ---- The pictures don't belong to me! Kimetsu no yaiba does not belong to me! Kimestsu no Yaiba Male Harem x Male! Oc Yaoi story