A new title by MIIKE Kei, the artist of the Young Magazine Web serialized series "Entanglement: My Truth and your Lies"! Kouhei and Mako are a couple in love. However, Kouhei is worried because Mako is very unwilling when it comes to having sex with him. On one such day, he hears a proposal from Mako: how about partner swapping sex with another couple? A shocking work that opens a new door of immorality!