Tokyo: Love Before They Become Female Ghosts

Hasegawa Takuya has been reincarnated into a nation where the supernatural has descended. To grow stronger and, more importantly, to stay alive, he is forced to form bonds with the island's most notoriously dangerous women. His mission: protect their humanity and ensure they never transform into malevolent ghosts or demon lords that could destroy the world. Because if one of them dies, she will become a terrifying ghost with an eerie, breathy voice—a warrior of the detached house, crawling down the stairs. If another perishes, her copies will multiply endlessly until they fill the entire world, even the universe. And as for the last one... should she fall, Takuya suspects humanity's entire video-based technological development will have to be scrapped and rebuilt from scratch. Takuya toils diligently, treading on eggshells, as he works day and night to maintain these girls' humanity. Watching their "humanity value" slowly rise fills him with pride and a sense of glory. It was he who was protecting the world. That is, until one day, when he finds the girls barging into his bedroom, eyeing each other like rivals ready to settle the score. Glancing at their "humanity values"—which have become completely unreadable—Takuya suddenly realizes with a jolt. The system had played him for a fool. Why didn't it tell him that humanity value was also affection value?!