Kazama and Kawakami are so close that they go on private trips together. The theme given to them this time was "challenge." In a masochistic man's limit challenge, she jerks his dick after he ejaculates and kicks his balls until he runs away. In her first attempt at a phone club, she has lesbian phone sex with an Amateur woman. In a slutty threesome, she makes him ejaculate five times within the time limit and uses her pussy in turns to squeeze out his semen! In a foursome orgy that makes the actor moan, Kazama gives him a titty fuck and Kawakami gives him a vacuum blowjob, and they use their special skills to get two consecutive double crab-legged cowgirl shots!