[DeepL Translation - needs review] Volume 1 Introduction: Kazuaki is troubled by the lack of sex with his live-in lover. Sei is in unfulfilled love with Kazusho, Kazuaki's childhood friend who lives with Kazuaki and is Kazuaki's classmate at work. One day, Kazuaki receives an e-mail that Kazuaki thought he had sent to Kazuaki by mistake. From there, they begin a strange exchange in which they confide their problems to each other without knowing each other's true identity. They want to hold e...
