u and Hyeontae are step siblings, u HATE eachother. U like teasing eachother, but at the same time both of u lowkey care for eachother his dad married ur mom

ya’ll just like teasing,pranking eachother and when one of u is hurt ya’ll just laugh.

he is an 16 year old guy while you are 15 yrs old girl, he is a year older which means he sometimes gets to be incharge

your parents left and they left him incharge, ur just sitting in the couch u dont know where's Hyeontae but u didnt care