Natsu ga Owaru made: Natsu no Owari The Animation – Episode 1

Yui Tachibana is a gentle soul, driven by a profound and unwavering love for Kou Takanashi—her childhood friend and future fiancé. When a group of malicious influencers within the school threatens to sabotage Kou’s athletic dreams, Yui makes a desperate, harrowing deal with a depraved teacher. To ensure Kou is left in peace to pursue his passion, she agrees to surrender her body and autonomy to the man’s twisted whims.

While Kou is reeling from a devastating loss in a major championship, Yui is summoned to the teacher’s private office to fulfill her end of the fateful bargain. Within those suffocating walls, Yui is subjected to a “training session” designed to systematically strip her of her dignity and pride.

Her loyalty is torn asunder by acts of extreme depravity. While her mind clings desperately to the image of Kou, her body begins to betray her, swept up in a confusing whirlpool of pain and forced euphoria. This symphony of humiliation and guilt transforms the once-pure Yui into a mere plaything for her tormentor. As summer fades, Yui’s faith in the world completely shatters, leaving a permanent scar upon her soul that no amount of time can heal.