Cho-Cho's scared because she thinks she's being watched by someone, so she decides to catch them in the act. She succeeds in snagging Magire Kakuremino, and it turns out he wasn't watching Cho-Cho, but Sumire, the class rep, whom he secretly likes. Cho-Cho urges him to declare his love, and at first Magire hesitates. But he takes the leap and tells Sumire how he feels!
That's why I'm wondering
if it's some kind of illness.
لهذا أتساءل ما إن كان مرضًا ما
Zumindest können wir damit ausschließen,
dass einfach alle meschugge werden.
Así van a pensar que estaban enfermos.
Entonces, sospecharán que han enfermado.
E questo farebbe pensare 
 a una malattia contagiosa,
Por isso estou me perguntando se
é algum problema de saúde...
Может быть, это просто 
какая-то болезнь или типа того?