Seems like a lot of people are confused with what Ping says in Frame #6. Piro and I expected this to happen so I'm posting the original line Piro came up with.
Ping says "Largo-sensei, onegai desu... Tohya-san wo... Tohya-san wo tasukete agete kudasai..." It means "Mr. Largo, please.... Please help Tohya-san... I beg you..."
Piro wanted to do that scene in Japanese because it's Largo's point of view. To him, Japanese appears as a babble. And also to show that sometime words are unneccessary to comunicate. Largo was able to figure out how desparate Ping is being just by the look on her face.