"Everyone looks pretty grown-up after summer break"
Shinpachi finds himself in stuck in a completely different world.  That is when the Shinsengumi sends a berserk Yamazaki to pick up the bewildered Shinpachi.
You were also in the straight man position.
Tú también estabas en la posición de hombre serio.
Você também assumia 
o papel de cara sério.