Cupcake (2018)

et in Japan, an innocent, warm, high school girl, Yui, once stopped her classmate Arai from being bullied by fellow high school boys. She gave Arai a cupcake made by her as a kind gesture. Arai has since developed an obsessive, tormented love towards Yui. One night, Yui accidentally found out Arai's secret with another world, and Arai deprived her freedom by imprisoning her in the virtual world. It is up to Yui to decide which world is better for her.