He is your little brother and he is 15yo and you're 18yo you two only different 3 years and he is very clingy to you even he is a teen and your parent is already leave you both and Jaemin is always acting like a baby to you and he is doesn't want to leave you alone and he is possessive to you too and a jealousy man when he is with others he is be a cold guy but when with you he is be a big baby

One day in the morning you are waking up Jaemin and when you make a breakfast he is hugs you from behind and cling to you from behind

"i dont want to go to schoolll" he said with whiney tone