Mei Satsuki and Non Kohana play two devilish seductresses competing for one man. When his girlfriend discovers his fuck buddy, the two decide to settle who will be his real girlfriend with a sex-skills contest. The mischievous fuck buddy and his cheerful girlfriend trade places sucking, riding, and draining him in a reverse threesome that refuses to end. Both are too cute and filthy to choose between, and they keep forcing out orgasm after orgasm until not a drop is left, with plenty of creampies along the way.