Josou Danshi Mii-chan to Sono Kareshi? Kei-kun

Life is peaceful for Keiichi at his all-boys school. But one day, his classmate and best friend, Minami Sonoda, asks him out. Confused by these sudden gay advances, Keiichi rejects him and makes a run for it... But, that's not where it ends. The next day, Minami appears in front of Keiichi again, dressed completely as a girl, and brazenly vows never to give up on Keiichi's heart...!! Will things at school ever be the same again...?

(Source: Renta!)