Well to be fair if Rin was aiming to be the best in the world it wouldn't be surprising if he picked up a language or 2 to.help him when he moved to a different country like how sae moved to Spain it wouldn't be shocking if he learned a bit of spanish during his time there
FRRR I FORGOT KUNIGAMIS NAME AT THE BEGINING AND HE LOOKED LIKE BAKUGO SO I CALLED HIM “WANNABE BAKUGO” THEN I REALIZED HE WAS NICE AND STARTED CALLING RAICHI WANNA BE BAKUGO😭😭😭
Fun fact:Rin is based on mikasa and eren,the creator of bluelock himself pointed this out,he said the hair is mikasa's and eyes and the titan marks underneath rin's eyes are eren's...He made it look like eren and mikasa had a happy ending and had a son named RIN😢