Ichika, Nino and Itsuki plot ways to make a move on Futaro during the school trip. Yotsuba is troubled by their change in attitude.
They wouldn't buy that two sisters 
are both staying in sick together.
Zwei Schwestern, die sich krank stellen,
würde jeder verdächtigen.
Ça aurait été suspect
que deux d’entre nous soient malades.
Non si berrebbero mai che
due sorelle stanno male insieme.
Não acreditariam que duas irmãs
adoeceriam ao mesmo tempo.
Они не поверят,
что обе сестры сидят больные.