Momiji Vol. 1 Fallen leaves off season  

 もみじ

Our story begins as Momji's virginity is taken by Kazuto. We learn that Momiji is a girl without a will of her own, while Kazuto is the son of a wealthy and influential family, Kazuto takes an interest in Momiji when he sees her at school, and he goes out of his way to get her to come live in his house as a maid. Although Kazuto declares that he hates a girl without a will of her own, he finds great pleasure in taking advantage of her, and he demands that she serve him by giving him sexual pleasure. Momiji is not aware of the complex relationship that exists between Kazuto and Shizuru, and the episode ends as Momiji comes to see Kazuto in his bedroom.

 Momiji Vol. 2 Young leaves change  

もみじ

The episode begins with the introduction of Ayane, who is in love with Kazuto. Despite her efforts, Kazuto shows no interest in her, but she is determined to change that. Meanwhile, at the end of a physical exercise class, the girls quickly dress themselves leaving Momiji in the changing room alone, that's when Kazuto shows up and forces her to have sex with him. Returning home, Kazuto finds Mari, an uptight maid of his masturbating on his bed. Provoked, he tells her that he will punish her, that's when Mari confesses her love from him. We soon discover that Mari is the faithful head servant of Kazuto. She prepares Shizuru, Ayane and Momiji with vibrators, ensuring that they are sexually aroused for Kazuto's liking.

 Momiji Vol. 3 Young leaves awakened  

 もみじ

The episode opens with Ayane starting work at Kazuto's house as a maid. The first thing in the morning, she is assigned to wake her master, Kazuto, only to find that Kazuto wants service from Momiji. As Ayane is made to watch Momiji and Kazuto, Ayane begs Kazuto to let her serve him too. This results in Kazuto getting the two girls naked together. The game is to see which girl can make the other girl reach her sexual climax first. He promises to have a sex with the one who wins. Determined, Ayane makes Momiji come.

 Momiji Vol. 4 Momiji that never falls  

 もみじ

The episode begins with Kazuto in a strange mood. He gets Mari to take a bath with him. Mari, with her sexual desire fully charged, ends up having wild sex with Kazuto. That night, Kazuto scolds Momiji for not showing enough emotion. Irritated he straps her to his bed and drips candle wax all over her body. Later that night, Shizuru comes to Momiji and comforts her. Shizuru tells how Kazuto used to be disinterested in everything until Momiji came to stay with them. The story ends as Momiji kisses Kazuto on his cheek, the kiss wakes him by the slight smile on his face, we learn that he appreciates the affection Momiji has showed with her kiss.