Kariu Rena is thrown for a loop by what she thinks is Chizuru's spiteful behavior toward her.
it's important for them 
to learn the pain of it
من المهم أن يتعلّم ألم ذلك
jedoch ist es wichtig für sie,
den Schmerz zu erfahren
d’apprendre de leurs erreurs
et d’en sortir plus forts.
Tuttavia, credo sia importante 
che imparino e ricordino quanto faccia male,
é importante que elas 
aprendam a dor de falhar,
для них очень важно получить опыт