Natsu ga Owaru made: Natsu no Owari The Animation

The story revolves around Yui Tachibana, a beautiful girl with a pure heart. In order to protect the dreams and future of her boyfriend—her childhood friend Kou Takanashi—Yui is forced to swallow her pride and accept a dark pact with a twisted teacher.

On the fateful day when Kou suffers a devastating defeat in a major match, Yui is summoned to the teacher’s private room. She walks with a heavy heart, unable to escape the humiliating ‘promise’ they had signed. Inside that dimly lit room, Yui falls into a spiral of depraved and sinful pleasure.

As the summer outside slowly comes to an end, Yui’s innocence vanishes forever within that room, lost amidst echoes of moans that are as intoxicating as they are agonizing…