I want to test the nipple sensitivity of competitive swimsuit athletes! So we sneaked into the pool at a women's physical education university. We handcuffed Sakura, whose face and body we really like, and used her as a test subject, applying various stimuli to her breasts and recording her reactions in detail. When we rubbed and sucked her beautiful nipples, she said, "I'm so embarrassed I can't breathe..." She let out sexy sighs as she wiggled her legs. Then we sandwiched her nipples with a powerful electric massager! The special suction vibrator seemed to have made her lose her balance, so after some acrobatic cunnilingus underwater I ended up putting my dick in! While sucking her tongue and cumming inside her (as she requested), she moans like crazy as she continues to stroke her nipples. She squirts so much from her nipples that the pool is about to overflow!