(Note: If you were looking for a specific spin-off titled literally "Anehame Exclusive," it is likely a misreading of the fan-group credit page, as the main title is Ane wa Yanpachi Junjou Chu.)
: An adult animated adaptation was released between late 2021 and early 2022, consisting of two episodes. According to anehame ore no hatsukoi ga jisshi na wake ga na exclusive
It looks like you're asking for a (e.g., for a manga/anime news site, database entry, or promotional article) regarding the title: (Note: If you were looking for a specific
This falls squarely into the imouto/ane (little sister/big sister) romance subgenre. While this is a common trope in anime/manga, this series focuses heavily on the domestic slice-of-life aspect—showing how their relationship changes from "family" to "lovers" within the same house. for a manga/anime news site