not hentai

A female teacher in a pink sweater stands at a green chalkboard, writing Japanese characters and holding an open book, then turns to the class with a surprised expression. The scene cuts to a classroom where students in blue uniforms sit at wooden desks, some looking at papers, while a blonde girl in a yellow sweater and a dark-haired girl in a blue uniform react with wide eyes and hands over their mouths. The sequence ends with a close-up of a small white object on a wooden floor near a pair of feet in blue shoes.