
i’m a lil confused i think i should re-read the story but why does oh rino hate blue hair man?

Jiseng's dad captured Rino and put him in a tank for Jiseng, taking him put of the wild. Rino escaped (unknown how still) and began living in human form, arguing the hatred he had for humans because he was kidnapped and made a plaything/pet. So he uses that status to use humans' money until they're broke and then leave them.
d-did he just stuff pens and markers up his ass
yup. way to misuse stationery ╮( ̄▽ ̄)╭ those poor pens must feel violated and so do my eyes tbh