Sister's Neighbor.

Kibong, a lonely widower living with two sons. The only pleasure is playing with the karaoke assistant. One day, Sister Garden and Yoon Jung moved to the next door. Since only women live, the sisters ask Kibong to do simple housework. The sons also target the sisters next door. Kibong and their sons Hyunwoo and Jeonghoon live in a relationship with the sisters next door.