Bullying by Senior Members of the Tennis Club [テニス部の先輩いじめ]

A timid freshman is forced into the tennis club where senior members subject her to relentless bullying, stripping her down to exhibitionist humiliation and diaper‑clad servitude. The seniors spank and shame her, turning every practice into a cruel display of forced exposure and urination while she struggles to maintain dignity in bloomers and a diaper. The story builds a tense, yuri‑tinged power play that promises escalating humiliation and erotic tension for readers.