#starlo knows enough japanese to know that chujin is shit talking about him under his breath and even though starlo doesn't

[rustedleopard]

Headcanon: Starlo does know some Japanese from being friends with Ceroba and hanging around her/being taught by her. He's definitely not as good as Ceroba is at it (and even Ceroba's Japanese isn't all that spectacular because monsterkind being trapped underground for who knows how many centuries has caused information like foreign languages to be lost to time. She's conversationally fluent). Unfortunately, Starlo understands it better than he speaks/reads it and his pronunciation leaves a lot to be desired. The best way to put it is that it sounds pretty similar to Yokohama Pidgin Japanese.