Season's changing, so is my love

(So, yeah I changed the protagonist's name and I'll focus on making a webtoon of this story~ (*•̀ㅂ•́)و" cheer for me~)
Every day was the same for Hyun-joo. Go to work, come back and find your boyfriend playing games. It was somehow peaceful and she was fine with that. However, one day everything starts to fall apart, starting with the change of department. She has a hard time adjusting to this new environment and, to make matters worse, her friend keeps pushing her towards a singer from a rock band who has gone to sing an ost and seems to have a crush on her. Although she doesn't like change, Hyun-joo doesn't have a choice. As they got closer, her heart also began to change. But how can she end a 5 year relationship? She built a world that was about to fall apart, and it was scary.