It's pretty heartwarming seeing all his friends come together to help him get his shot. Dude is obviously terrified and struggling. Bravery is more about facing your fear than it is about objective danger.

There is... a lot going on in that first picture. The two guys that have half their shirt off makes sense because they're getting ready to have their own shots I guess. But why is the one guy with the puppet have his belly exposed? And then there's another guy whose head is just a party hat. It looks like the one behind him, his head is just an orange. Though I have to tell you after having watched all of Assassination Classroom, seeing a guy with pigtails no longer makes me go "whaaaat?". But why does he not have a face??