<i>Retro BL</i> is a collection of yaoi one-shots, with each story exploring a historical setting. <b>Hako no Naka no Ittousei</b> Mayuzumi takes in Saitou, a struggling novelist. Shocked at Saitou's frivolity with money, as well as his scandalous behavior—which Saitou claims to be essential to his writing—Mayuzumi becomes a convenient partner to satisfy Saitou's physical desires. However, when marriage is put on the table for Mayuzumi, the hero of Saitou's novel cannot make up his mind. <b>Kusuri mo Sugireba Koi to Naru</b> Tao is a live-in apprentice to the owner of a medicine shop. His teacher often brings other men back with him late at night, and Tao has just about had enough of his continual fooling around. <b>Kawataredoki no Yume</b> Shinobu is happily married to his wife, Kyouko, and has been for some time. However, when his brother-in-law, Harumi, shows up unannounced, Shinobu is reminded of a thirst he once felt in his youth. He grows more and more aware of Harumi