Demon Slayer: Upper 0 seems to be a waste

#Original male protagonist, locals have no system, no accurate CP setting, no harem, which means anyone can take a bite. Non-combat type protagonist, fragile group pet and then start to avoid thunder 1. The male protagonist has no official match, he turned into a ghost at a very young age so his personality is very childish, in fact he is also very young, a little younger than Lei. 2. The male protagonist's memory of human period disappeared, and his name was given by Muzan later 3. Draw the key points! ! ! ! The protagonist is a ghost and has no memory of human period, so his personality and world outlook are completely shaped by Muzan, completely a ghost, please stop immediately if you don't like this! ! ! Please, I'm sending electricity for love, don't scold me, if you don't like it, you can quit, don't scold the cook, the cook can't cook...