: Primarily developed by Soft Circle Courreges (also known as Courreges Ace).
The story follows a protagonist who is reunited with , a girl one grade younger who has spent a significant amount of time living abroad. On the surface, Yuumi appears to be a "neat and serious" student. Due to their families' close relationship, the protagonist is asked to look after her as they attend the same school. tonari no ano ko wa kikoku chijo rj01020541
: Following its release as a visual novel, it was adapted into a light novel published by Paradigm Corp in August 2023. : Primarily developed by Soft Circle Courreges (also
The narrative takes a sharp turn when Yuumi visits the protagonist's house for a study session. Despite her innocent and refined appearance, she begins making bold, suggestive advances, eventually revealing a highly assertive and "naughty" personality that contrasts with her public persona. Due to their families' close relationship, the protagonist
: The game features character designs by illustrator Chobipero and uses animated elements for its mature scenes.