Hot and Stuffy

A pink-haired girl in a pink shirt stands beside a taller girl with long purple hair, hugging her from behind and calling her "Senpai," then complains her rack is too hot and stuffy, before the scene cuts to the two girls standing side by side, the shorter one looking annoyed as she says it's not hot or stuffy, and the taller one, with a smug expression, replies that she was playing the kind senior, all set in a room with light-colored walls and vertical blinds.