hi, what was the name of this manga? the genre was supernatural/horror. this boy lives wit...

hi, what was the name of this manga? the genre was supernatural/horror. this boy lives with his older sister who gets on his nerves for being lazy and bossing him around. the boy gets so annoyed with putting up with her that he uses a website that allows you to switch bodies with someone else, but you don't know who exactly. you walk through a door, and it makes you switch with another person. I think later on, he finds out that walking through a red door means you will switch with a female body. the first person he switches bodies with is a cute idol girl. while he's in her body, he meets a stalker guy who pretends to be her boyfriend. he figures it out, attacks the stalker, then runs off and falls asleep. when he wakes up, he is next to his sister's dead body. the sister was killed by whoever last had the boy's body. he knows that he'll get the blame because his body was the one that killed her, even if he wasn't the one using his body at the time. he puts her corpse in a refrigerator. at school the next day, he acts normally at first but then has a moment where he cries, I think while a classmate was talking to him. he realizes that now his life is ruined thanks to whoever had his body and killed his sister with it, so he decides that he'll find them and get revenge on that person. at some point, he meets with the idol girl that he had switched with at the beginning. this is where I start forgetting more details... all I remember next is that they team up together to beat this guy, I think they purposely switched so that she could use his strength or something. anyone know what the title is? thanks in advance.