Heartwarming dramas with a found family trope

I am mainly looking for Kdramas and Jdramas. But Cdramas are also fine tho no. Of episodes should be under 30. With or without romance is fine. 

I've watched all the main stream romcom kdramas so please suggest others. 

Here're some of such dramas I loved:

1. Kotaro Lives Alone (Jdrama) 

2. Dali and the cocky prince (Kdrama) 

3. Why I dress up for love (Jdrama) 

4. Fight Song (Jdrama) 

5. Complete Reply series (Kdrama) 

6. Still 17 (Kdrama) 

7. Go Ahead (Cdrama) 

These are just some to give you guys an idea what I'm looking for. 

Please help as I feel in a drama slump! 

• Bulgasal: Immortal Souls
• From Now On, Showtime!
• If You Wish Upon Me
• Just Between Lovers
• Poong, the Joseon Psychiatrist / Poong, the Joseon Psychiatrist Season 2
• Stealer: The Treasure Keeper
• The Uncanny Counter
• Thirty-Nine
• Prison Playbook
• Summer Strike