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During his high school years, Keita was slender and had feminine features, but he fell in love with Satoshi, an upperclassman who had the lean, masculine physique he dreamed of. Keita confessed and perhaps due to his beautiful, girly looks, they started going out. Three years later, their relationship is as strong as ever, and they currently live together like newlyweds. However, there was one big change...! Keita had matured into a manly guy! Because Satoshi used to be straight, Keita begins to wonder what his boyfriend thinks about the situation, even when they e having sex...

Keigo is a super serious guy, and Shohei, the outgoing one. These two opposites have been best friends since high school and ended up attending the same university. Keigo, who's got a crush on Shohei, gets all twisted up about it and starts using toys to, well, pleasure himself while thinking about Shohei. On the other hand, Shohei gets some tips from an upperclassman about the wonders of self-love and ends up getting a prostate massager out of pure sexual curiosity. And guess who his material is... his best buddy Keigo!?