When did my male friend start looking good?

Fifteen years old, a turbulent time. Baba Middle School is full of bewildered children with rapidly changing bodies and minds, and our protagonist, Dan A-Eun, is the most confused of them all. She's starting to have feelings for Han Dong-U, her classmate of 10 years...? It's my heart, but even I'm not sure!

(Source: Manhwakyung, translated)