Saki, a beautiful short-haired girl with a dazzling shy smile, is the Madonna of the tennis club! One day, a handsome, evil senior uses his clever talk to persuade Saki to have sex with him. What happens to her? The senior's plan escalates as he says, "This girl is surprisingly erotic... She's innocent, but she's super sensitive! A pure and obedient girl has some naughty sex!