Kariu Rena is thrown for a loop by what she thinks is Chizuru's spiteful behavior toward her.
This is totally Hishiro-san 
misreading things.
.هذا سوء فهم من هيشيرو-سان حتمًا
Hishiro versteht da definitiv was falsch.
Di sicuro è Hishiro-san che si sbaglia completamente.
A Hishiro-san está totalmente enganada.
Хисиро точно не так поняла.