yoona and seungi 

yoona and seungi are a loving couple they each have ex husbands and ex wifes but they have kids together as well 

lee aedan 

aedan is a kid from seungi's previouse marriage he is very michevious seungi and his ex wife shares the custoby of aedan but mostly aedan stays with seungi he only goes out with his mum on saturdays and sundays aedan took after seungi's surname and seungi treats aedan like his own son 

alex 

alex is a kid from yoona's ex marriage he is a real charmer and ageyo king yoona has the full custoby of alex she only allows alex to go to his dad on weekends 

maxine

maxine is seungi and yoona's son together they dote on this son alot as he is their  first born  son and they went through a lot to have him  maxine being the oldest has a lot of responsibilities in taking care of the  dongsenags espacially aedan 

lee minjun

minjun is the youngest in the family he is seungi and yoona's youngest son he is the center of atention for  his parents he attends preschool he enjoys watching cartoons and pororo