All the other WhatTheFuck-ery aside, I do kind of appreciate the twist of how he was excited about his "buying a slave girl and getting her to like me" quest/goal/thingy out of his Book, and then the Hero shows up after he's been incarcerated for ....yeah, and she's like "I'll take this prisoner as my first adventuring companion!"
A neat little twist on the trope, as it were.
Plus, Dinosaur People is criminally under-utilized design space and we need more of it in fantasy manga.
Thanks for the TL