Write an erotic story featuring tennis coach NAME_1 and his virgin protege NAME_2. In order to perfect NAME_2's tennis technique, he decides to teach her about anal sex. NAME_2 is a virgin and is eager to learn. Without any foreplay or forewarning, NAME_1 rips off NAME_2's clothing and bends her down at the waist. NAME_1 forcefully places his erect penis at NAME_2's anus, and she is thrilled and excited. His erect penis is pressing into her virgin ass. NAME_2 struggles as NAME_1 presses into her. NAME_2's anus stretches as his member invades her ass. Eventually NAME_1 enter's NAME_2's ass and begins thrusting intensely. After an intense session of anal sex, NAME_1 ejaculates into NAME_2's virgin asshole. NAME_2 also orgasms from the experience of having her ass taken. After raping her ass, NAME_1 forces NAME_2 to clean his penis with her mouth. Degraded, but willing, she licks his penis clean. NAME_2 feels completely conquered and submissive to NAME_1's desires.