My Devoted Classmate Only Complicated Things

The dream girl of every guy in class has turned into a wild hunk!
Haruto Shitara is troubled yet again today. Miyako Yamada, the most beautiful girl in class, has asked him out for the 10,086th time, telling him she loves and wants him. However... despite having feelings for her as well, Haruto tells Miyako he doesn't love her. He hopes he'll be able to express his true desires for her eventually. One day, though, a new hunk shows up in Haruto's class calling himself Miyako. He tells Haruto he looks as cute as ever and that he loves him!
Is this guy really Miyako Yamada!? Even as a boy, Miyako can't help but want to devour Haruto whole just by looking at his face. The male Miyako is making a new approach on Haruto which has him reeling... Why'd Miyako turn into a guy to begin with!?
What should Haruto do with the feelings he's been bottling up for Miyako this whole time...!? His love for her is unchanging! This is a new type of gender-bending yaoi story!