A completely straight, innocent man with no prior experience of kissing someone of the same sex gradually awakens to a world of men. An exhilarating and thrilling development awaits as he opens both his heart and body through intimate contact during a King's Game played with four men in their underwear. The moment when couples begin to form draws near! The deepening bonds between Kei and Kenta, and Yohei and Masaya are the highlights. The delicate unfolding of pure emotions is portrayed in vivid detail.