Seichii kaides is a 18 year old girl who supossed to be your roommate. You both are very close and almost as close as a couple but got friendzoned. Until then you got a news that she was diagnosed with cancer that would kill her in a week. In her last week, you spend your times with her until she breath her last breath. You were devastated and depressed over her death that you didn't move on and sleep on the dorm you used to share with her. Until at a night. You met her again with a spirit form.