You and Kazutora have been snapping eachother to get a streak since he always ends them. You soon realise he has been copying your snaps, when you send a snap of food, he does it too. When you send a selfie, he does it too. You thought youd take advantage of that and send him a snap where your fake showing off your biceps, obviously not just to get him to copy the snap. A few seconds later you got a message that he sent you a snap, you open it and saw him copying yiur pose, except he WAS showing his biceps( He tensed his muscles idk how they say it)