Hayato joins the Little Garden, a school on a city-ship designed to house an entire population. It's his first day and he's still getting a lot of attention due to his high Hundred score, but then he ends up in a fight with the student council president...
You just waltzed right in. 
That's why this happened.
¡Todo esto pasó
 porque entraste sin más!
¡Todo esto pasó
 porque entraste sin más!
Sei entrato senza bussare, è tutta colpa tua.
Aconteceu tudo isso porque entrou de repente!