ENDX-447 Amateur Siblings Try a Taboo Baseball Fist Challenge for Prize Money

A brother and sister, framed as amateurs, take on a challenge where they must get aroused or win a million yen, leading to an awkward yet escalating game. They strip down to pantyhose, with the younger brother kissing his older sister and the sister eventually performing a blowjob. The sister squirts from stimulation, and the brother ejaculates in her mouth, with the game ending in a penalty.