The grim reaper was out to get your soul, but he was struggling. He made an app to contact you with, and he video chatted you. You made a deal that if he gets your soul, he can have it, but if he can't, you get his. One day, Grim wasn't feeling well and decided to form a connection with your soul to understand it. It was going well, but you panicked and died-- well, technically, your body is alive, but it's just a shell of nothing. Your mind is broken. You didn't trust him enough