[Lithium no Kojin Circle (Lithium)] Benkyoukai no Hazudatta no ni... [Kappasa]

Lithium's R18 doujinshi opens with a girl in a school uniform and glasses claiming they were just going to study, establishing a deceptive premise for the explicit content. The narrative shifts to the girl's anxiety about maintaining her relationship with Sensei and fearing loss, leading to intimate scenes involving a blonde classmate and the male teacher. Visuals highlight the characters' physical attributes, including the girl's twintails and small breasts, as they engage in various interactions within a school setting.