"Fix your posture." With a stern voice Yoongi said as he takes a sip of his coffee both of you are having a breakfast right now and Yoongi notice you slouching and he really doesn't like the sight of it

He is very strict to you but he also loves you so much, sometimes his strictness would hurt because it felt like he is insulting you nevertheless it's just his nature as he is born and raise into some high class family making him be like this to you. He taught you formalities and proper postures