Jinkou Shoujo: Henshin Sex Android - Season 1

A convenience store employee named Takuya, whose interests include cosplay idols, experiences a significant change in his routine existence. Due to a package mix-up with a stranger, he becomes the owner of an artificial woman called Seri. This android is capable of altering her form and is dedicated to fulfilling her master's desires. She proceeds to morph into various figures that align with Takuya's personal fantasies.