Hime goes to a doujin event to help Bel-senpai. The popular thing to look out for at doujin events is of course, cosplay... So of course they dress him up, and...
Hime-kun, you look like you had fun.
Hime-kun, du schienst auch
 Spaß gehabt zu haben.
¡Veo que Hime-kun se divirtió!
¡Veo que Hime-kun se lo ha pasado bien!
T’as l’air de t’amuser, Hime !
Hime-kun, parece que você se divertiu.