Maybe it's true that people eat under stress, or at least this is what Oikawa's discovering, because ever since getting here, his most visited place would probably be the kitchen. It's not as if he actually cooks anything, but he definitely does make use of the snack foods (see: junk) that are supplied, and of course he only indulges in them occasionally (as some of us have a brand-- and figure-- to maintain!), but these occasions have been becoming somewhat more frequent (though not more than twice a day, he'll assure you..) since he's realized that there really is no getting out of here.
Right about now is practically a perfect example of him slipping into the kitchen, at a pretty late time at that (it's dark!), when (hopefully) no one else is around. Everything's going according to plan, or at least it was, until he reaches for that single rice krispies treat at the same time that someon else does. Pausing, he doesn't turn to look at the person until he realizes their hand is much smaller and feminine in comparison to his, so he glances over now, smiling.
Pigtails, small stature, and... the most annoyed look he's ever seen on a girl before in his life? All of these things make up the person who apparently wants to take away his choice of snackage and, to be honest, he's not having it.
With the same smile on his face, he tilts his head while reaching over quickly enough to snatch the rice krispies completely. "I'm so sorry, but I was here first.. Hopefully you can find something else?" The way he says it sounds more like a final decision rather than a suggestion or something that can be reasoned with, so he's not going to budge.