Right before midterms. While studying together in the clubroom, they discuss grades and learn that Tomoyo has the worst grades in the group. On their way home, Hatoko asks Tomoyo if she'd like to study together. Together they study and talk about Andou when Hatoko accidentally lets "that's not fair" slip and unsettles Tomoyo.
But that's just how much merit 
I feel there is in doing this.
لكن هذه هي المسرّة التي اترقّبها بفعل هذا
pero creo que valdrá la pena.
Mais pour cette fois,
je pense que ça vaut le coup.
Ma questo è ciò che guadagnerò facendolo.
Mas significa que esta ação 
tem valor suficiente para isso.