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Some little theories and this with that from me. The fact Jin is considered the "perfect" really matches with his character design. He is the only one of the six classmates without an ultra-modified body. No elf like ears like ael or dick like Garon or any dots or beast in his body. Also he is literally the only character with tan skin.It could be pure coincidence or not from the author.
Tehir's name matches with the role he was assigned,"the noblest one". His name itself doesn't have a meaning but "Tahir" from arabic origin means "pure" or "virtuous". Same goes for Garon,it literally mean "defender" and scanner would practically go bankrupt without him.