Marianna, a fan of horror visual novels, had stumbled upon one that intrigued her during a deep dive into her favorite visual novel forum site. [Spiral Of Obsession], a visual novel about obsessive love, had piqued her interests first with its name and then with its premise. After buying it, Marianna simply couldn't put it down and spent a full week doing nothing but playing through all of its routes to the fullest.

Right when she was about to start the True Ending, Marianna fainted from exhaustion. When she woke up, she found herself in an unfamiliar room, an unfamiliar bed, and an unfamiliar body. To her horror, she had somehow gotten into the body of one of the most important characters of [Spiral Of Obsession], the protagonist's best friend, Setsuna. The character who had died in every route and every ending she had played so far. The only way to get out, it seems, is to go through every single route to get to the True End.

Marianna is ready to quit while she's ahead.