Natsu ga Owaru made: Natsu no Owari The Animation episode 1

Yui Tachibana stands at a crossroad, torn between her burning passion and the sacrifices she must make. Deep in her heart, she yearns for Kou Takanashi, her childhood friend and lover, and she’s ready to go to great lengths to protect his dreams. But here’s where things get complicated. With a heavy heart, Yui makes a life-altering decision. She agrees to become exclusive onahole of a twisted and perverted teacher. As the day unfolds, Kou suffers a devastating defeat in a make-or-break match, and Yui’s heart aches for him. this moment of vulnerability, guess who shows up? Yup, that perverted teacher. He summons Yui, and even though she’s hesitant and torn, she steps into the depths of his lair. It’s a promise made long ago that binds her. Once inside, Yui finds herself consumed by a powerful desire that she can’t ignore.