I Slay Demons Across the Anime Multiverse

Beichen Xiao transmigrates to a crossover anime world. He's got a little sister and a house, but both parents are dead: the standard protagonist template. Just as he thinks he can settle down to a peaceful life, the Higurashi Shrine next door, Miko Yotsuya, Shizuka Erizuka, Mei Misaki, Tomie, and others shatter his dreams of a happy life. Beichen Xiao says he can no longer make sense of this world. Faced with the demons and monsters outside the shrine who are lusting after his body, he figures that if he can't beat them, he should join them. Longjian Tong, activate!