wasn't he almost 33? so like, 32? and in korea, the korean age is calculated differently so in some rare cases u can have a small child not even 1 year old be 2 years old in korean age. i guess when they're born they start from 1 y/o and then on new year the person turns 1 year older than previous age. so a baby born on dec30 will be 1 y/o on dec30 and on upcoming jan1 the baby turns 2 y/o. (im not korean so i might be wrong in this aging system)

did the author forget the black hair dude's age or what cuz chapter1 he is 33 now his 30