Yu-No Episode 3

Takuya's world was turned upside down when his father died in a research-related accident. Concerned for his young stepmother, Ayumi, he decided to follow her to Ken Point. There, hidden behind a rock, he watched Ayumi and her best friend Mitsuki. Suddenly, a blinding flash of light transformed into an otherworldly beautiful woman. Before Takuya could react, she slipped a mysterious ring onto his finger, catapulting him into a parallel world. This ring became the gateway connecting Takuya to his alternate realities, forever changing his life.