Saki doesn't understand why she was taken to play mahjong but that's where Saki and Nodoka met. Nodoka wins but questions Saki's playing style so she asks for another game.
That's cause you're just too good, Nodo-chan.
هذا لأنّكِ بارعة جدّاً فحسب يا نودو-تشان
Es que eres muy buena, Nodo-chan.
C’est parce que 
Nodoka joue trop bien !
Il fatto è che sei troppo brava, Nodoka.
É que você é boa demais, Nodozinha.