EonGod

[WP] You are kidnapped and taken to a strange lab. Your kidnapper is a girl you reconize from your school (the science prodigy) who then injects you with a strange serum. You are allowed to leave but the next day find yourself transforming into a monster a seemingly random moments. After confronting the girl who kidnapped you, you are told your hearts are now connected, if her heart rate goes above a certain level you 'change' and, not only that but if one of your hearts stop the other ones will too and, vise-versa. She finishes her speech by saing this "-MC- please give me a reason to live again."