Insecure~Taekook

Taehyung is insecure about himself, even when there is nothing wrong with him. He is a medical student studying in France. He soon returns home and finds his new neighbor.
Jungkook is the son of the ritchest man in town. He can't get to college so his father disowns him. He starts a work at Taehyung's friend's Seokjin's family café.
What will happen between the two neigbours when they remember who the other was?
Since something did happen between the two, even if it was a long time ago.