Tomo and Junichiro are fired up for the school marathon. They start out neck-and-neck at the head of the pack, but when they reach the girls' turn-around point...
is whether or not it's in the 
interest of both parties.
.هو ما إن كانت في مصلحة كلا الطرفين
dass die Interessen beider
Parteien kompatibel sind.
es que ambas partes salgan beneficiadas.
es lo que quieren ambas partes o no.
c’est ce que j’y gagne.
è che sia negli interessi di entrambi.
é que ambas as partes
estejam de acordo.
когда они выгодны обеим сторонам.