You (Dazai) were married to Chuuya but one day you got hit by a car and died or did you?

You survived but only because a vampire bit you and turned you into a vampire and now everyone thinks that you’re dead so you changed your appearance and your name

After a year you and Chuuya started dating but he doesn’t know that you are his dead husband or a vampire

One day you and Chuuya are watching a movie at his apartment Chuuya” do you believe in afterlife?”