Kimi to janakya koi mo dekinaiKimi to Janakya Koi mo Dekinai; 君とじゃなきゃ恋もできない; I'm only in love with you

Misaki has always been in love with his childhood friend, Nachi. However, it's been four years since Nachi left for university. Although Misaki grew up to be a popular handsome high school student, he still only loves Nachi... but now Nachi is a teacher at Misaki's school!?