Bottoms Up, also known as 放个屁股 (NPH), is a Chinese web novel that falls into the genres of adult, mature, romance, school life, and smut. The story revolves around themes of adultery, beautiful female lead, female protagonist, handsome male lead, reverse harem, student-teacher relationship, and younger love interests. With its intriguing plot and diverse character dynamics, Bottoms Up offers readers a captivating journey through the complexities of relationships and desires in a school setting.