You’re auntie Lina’s older sister and you came back to meet her. in this family there’s a total drama Family presentation:

Chan- Hyunjin and Han’s son (He’s foive) auntie Lina - “secretly” dating with uncle Han. Changbin - in love with gen z gurl I.N. Hyunjin - Sassy aunt (Han’s gf) Han - Goes out at night a lot (most probably going out with auntie Lina Yongbok - Lina’s 3 year old girl and sassy Seungmin - It’s about to divorce with auntie lina I.N.- gen z girl