Thanks for flagging this, 14ak! You're right: in Chapter 266 Sol says "with you", but the Korean has her saying "Hyung", which is why the echo that follows didn't make sense. We've corrected it to "I wanted to eat them with Hyung……" and the update is live now.
Your point about honorifics is fair too. "Orabeoni" is sometimes rendered as "Brother" and sometimes kept as-is, and that isn't consistent across the series. We're going through those chapters now so Sol uses "Orabeoni" throughout, and we're checking the other spots where a reply echoes a word that wasn't actually said. Really appreciate readers who catch details like this. Keep them coming!