Rage

As for the Azil tribe, they did nothing about that lust that hit the young giants towards Richard's meat, rather, they saw it as a good way to earn more money, especially after Richard treated himself and grew himself a new leg!

When Richard learns that Azil's tribe intends to use him as a warehouse for meat besides using him as a doctor, he threatens to commit suicide immediately... And they believe him.

Forcing him to work as a doctor for free after they ate his mother in front of him was bad enough, what would stop him from killing himself if they cut off his limbs to sell as steak? So this lucrative business opportunity was unfortunately canceled. 

Richard's survival to prolong their lives was the matter of the greatest importance... but the idea had not completely left their minds completely.