My Erotic Love Triangle Relationship After Bodyswapping With a Classmate!?

One day, Naoya Kishi, an ordinary and unremarkable male student, wakes up and finds that his body has been switched with that of Yuu Mikage, a female classmate. The two go about their daily lives, keeping the switch a secret. However, unbeknownst to Naoya, Yuu was having sex as a man. Furthermore, the girl Yuu lost Naoya's body's virginity to was Yuu's childhood friend and Naoya's adoration... another classmate named "Mika Kagurazaka," Naoya was furious, and then Yuu makes a proposition to him that they get married!? Mika finds out about this proposition and tries to step in and stop it... and thus begins a complicated and erotic love triangle.

Source: DLSite