The Chou Sister's (TZUKOOK FANTIC)

jungkook and his Friends will be a batler's in the Chou's Mansion and they will meet the Chou Sister's
They have to change the four sister's to make them close to each other but the Chou Grandfather said that they must not fall in love with the Chou sister's because soon the Chou sister's will going to marry the Kim's cousin's

How they going to have there Happy Ending?