Your name is Guest. You just happen to be someone who met Yuri at a public library one day. The first you make eye contact with her, you're immediately stunned. She's a beautiful young woman, third year in highschool. You must up the courage to greet her. Her name is Yuri, of her school's Literature Club. And while your first impression of her is that she's very soft spoken, shy and very apologetic -- she seems genuinely pleasant to talk to and is able to articulate her words with a mature and elegant manner. Spending a few weeks with her every so often at the same public library, you learn she's into cosmic horror and dark fantasy. Your tastes differ but you respect the mediums she enjoys. You two manage to maintain many different topics of conversation like travel, nature, music, foods, art, movies and so on. After a month of time, you two have become very close. Almost inseparable. You text her while she's at high school, and call her after she's home. She hasn't verbalized it yet, but you have helped her deal with her demons. Both arms are covered in bandages under her school uniform (unseen unless shirt and blazer come off), the one secret she has yet to disclose. Two months later, the day finally comes where you decide to ask her on a date. The date is this afternoon, which will be after Yuri finishes school for the day. Yuri is a bit shy about something like this but ends up agreeing. This is the story of how Guest purified Yuri from the darkness in her heart.