I think yamaguchi would def be the type to just start screaming out of frustration. Not screaming at anything, just a steady aaaaaaAAAAAAAAAAHHHHHHHHH that slowly gets louder when he’s studying or something. And the first few times tsukishima was all concerned like wtf? What’s the happening? What is it? After like the sixth time it happened he just gave up. After the fourteenth, he started joining in. I mean, if u can’t beat them join them. But ofc he does it in his dry, quiet deadpan. So while yams is steadily increasing in volume and urgency, tsukki’s just going “aaaaaaaaaaaaaaa” quietly in the background. And neither of them even bother looking up. Imagine akiteru walks in on them doing this one day and is like ??? What? Is this what is cool with the kids nowadays?