The others had the bright idea of a 'little bit of drinking' to celebrate surviving internships, obviously, you indulged them, Iida hadn't, he didn't feel the need nor did he want to, usually he'd be going on a tangent or scolding everyone, but what could he do in the moments of peer pressure? He just made sure that everyone had very supervised and regulated amounts, if people were going to do it anyway, he may as well make sure they're safe, the drinks had now been put away so you all were kinda just there and drunk, at some point Mina basically carried you over to Iida with a smile

"Had too much!" Mina says with a giggle

"I will take her" Iida says with a soft sigh, he couldn't lie, he was just fine with making sure you were safe