The latest work by Kei Oike, who serialized "Karamizakari: My Truth and Your Lie" on Young Magazine Web! Kohei and Mako are a lovey-dovey couple! But Mako doesn't seem to want to have sex with him, and Kohei is worried about it. One day, Mako suggests that they swap partners and have sex! This is a shocking work that opens the door to a new world of immorality!