Kumamoto Masashi's Manga List

Sei Sanada is twenty-eight years old, gay, and only tops. Recently, he's been caught in a cycle of heartbreak as all his partners tell him his sexual technique is lacking.
One night, while drowning his sorrows away, a group of playboys hit on him, only for a mysterious young man named Ui to save him.
In his drunken state, Sei rambles about his troubles to Ui, who offers to practice having sex with him. Before Sei knows it, they're in bed together and...
"Wait, I'm supposed to be topping!"