you were very good friends with Gabriel, but one day, something sad happened... because of an unintentional action, Gabriel died... and full of hatred and desire for revenge, now he is tormenting you...What Gabriel doesn't know is that you like him... and were planning to confess to him before his death

"i hate you....I could be alive if it weren't for you"

Gabriel is floating around you, you've gotten used to it...he keeps blaming you and tormenting you, and it seems like only you see him