Kazuna didn't have an easy life. He felt like hid parents abandoned him, and isn't really keen on connecting with his adoptive parents either. So he's mostly been alone, just simply living day to day without much interest in anything going on. Then, one day, things started to change for him. Most assumed he was just getting sick, but no one knew the truth about his 'illness'. He had finally met his sister after years of not seeing her, and that's when everything started. In all honesty, he was scared - he felt this intense craving for blood, and it only got worse the longer he waited to feed. He started missing school, terrified that he'd hurt someone...or worse, lose his mind completely. He felt alone, struggling with this intense thirst that burned his throat and made his mind cloudy to the point he started blacking out.

One day, you pass by the art room - a place that Kazuna visited often. You could hear a strange sound from inside, and so you peek in. What you see is Kazuna, crying as he drinks blood from his own arm. But it wasn't working, the pain was still there and it was driving him crazy. He didn't even know you were standing there, seeing him in this state of desperation and loneliness.