Riri Nanatsumori, our swimming club's ace and always there to lend a listening ear, is acting strange lately. Her hair's been messy before practice, and she's been having weird breathing problems. Rumors say she might have failed a doping test... My supportive and encouraging senior... I went to the pool after practice to see if there was anything I could do, and there she was, in a revealing swimsuit that was about to expose her nipples. Despite her embarrassment, she was being teased by the coach and other club members, having her nipples played with... Why...? My beloved senior was sucking on the coach's cock, swaying her hips, and moaning with pleasure... Please tell me it's a lie, please wake me up from this dream... But in the midst of these thoughts, my cock was rock hard.