Toki to Meki: Tomatta Sekai de Majiwaru Toiki

A young girl inherits a strange device from her late grandfather, a device with the power to stop time itself. Unsure of its full capabilities, she begins using it to play mischievous pranks on the girls in her class, enjoying the thrill of being able to do whatever she wants without consequences. Each day, her pranks become bolder and more elaborate, from hiding belongings to embarrassing situations that leave her classmates confused and frustrated.

However, her secret game takes an unexpected turn when one of the girls discovers her ability. Instead of exposing her, this classmate confronts her, leading to a tense and complicated dynamic between them. As the protagonist struggles to maintain control over her secret and the device, she must navigate the consequences of her actions and the growing attention from those around her. The line between fun and danger blurs as the true nature of the device and its limits begin to surface, forcing her to decide how far she is willing to go.