I don't know if his appearance actually matches her real little brother's appearance, I think she's just charmed to think that's what her brother looked like because the other household brothers recognized him as Daryl right away based off appearance, so I think he actually looks like how he originally looked at the age of 3, and I think that's further supported because everyone else in the MC's household always referred to him as "taking a human form" and not taking the form of Conrad
Ohhhh okok that makes sense tbh the stories just a lil confusing overall lol
For everyone confused basically her “little brother” is not actually her little brother and is actually those other guys little brother who ran away and basically “died” and turned into an animal that MC found as a child and then he charmed MC into thinking he’s her little brother but everyone around could see that it was an animal and that she was being charmed the whole time until recently when his physical appearance turned into MC’s actual little brother after eating the food she made for him which gave him enough magical power to do so. Also atp im forgetting that her brother is her actual brother and pretending he’s adopted or sum bc theyre making it sooo weird