The Tree Blooming with Love

Soo Jin, Soo Jung and Soo Young are three siblings who live with their hardworking parents. Soo Jin is a journalist whose dream is to be a lawyer. Soo Jung dreams of being an art designer but struggles to achieve her dreams while pursuing her love interest Sung Hoon, a medical student who lives with the family. Soo Young is a happy-go-lucky high schooler who also acts as the primary narrator. This drama follows the daily life and happenings at the sibling's household, as well as the medical school students such as Hyun Woo, who is in love with the nurse Mi Young, the "campus couple" Jung Hye and Sang Cheol, who struggle with getting approval from their parents, and many more.
(Source: Jungjeon-mama at MDL)