Aneki... My Sweet Elder Sister: The Animation

Takumi just cannot stop fantasizing about Saki-senpai, her voluptuous body just stands out anywhere. One day she talks to him on the train and they become friends. Whenever he can, Takumi stares at her form, always getting a hard-on. The next day he finds out they have the same fetish... and so the story begins.
(Source: AniDB)

Episode List (4)

Sweat 79% Femdom 79% Anthology 79% Fellatio 70% Squirting 60% Bondage 60% Male Protagonist 60% Incest 60% Episodic 60% Heterosexual 60% Ashikoki 50% Sumata 40% Feet 40% Anal Sex 40% LGBTQ+ Themes 20% Exhibitionism 20% Sex Toys 20%