[Tsukudani] Cousin-Nee-Chan! [a dolphin]

With his parents away on a month-long trip, Yuki's quiet solo life gets upended when Toko, his drunk older cousin, moves in flushed and full of booze-fueled vigor. Teasing about loneliness quickly gives way to her spread wide and dripping under his eager tongue, and she repays the favor with a sloppy, cum-drenched blowjob that ends with her swallowing everything he has to give — then breathlessly asking if he can still keep going. Shameless, busty, and three sheets to the wind, she proves that when desire and family collide, ethics never stood a chance.