When the Summer Light Pours

Yoo Jung is going on a trip to France with her boyfriend. While there, her boyfriend wants her to sing a song for him, so Yoo Jung decides to take a month-long guitar lesson. The guitar teacher's name is Hannah which so happens to be the same name as the one in the love song she wants to learn.
(Source: MDL)
~~ Adapted from the song "I Wanna Be Your Girlfriend" by girl in red.