Love Me! - The Princess of the Boy High School and the Prince of the Girl High School

When Akira announces he was a boy in the first book "Ai wo Utau Yori Ore ni Oborero" so does the fact Akira goes to Dankaisan the boys school next to St. Nobora (Mizuki's school). Things start to get rough when pressure against Mizuki dating a boy from that school rise.