Diary of the Improper Monster Girl Transformation

"I have walked on thin ice all my life, and I have kept my vows to remain pure, and I have never broken them!"
"...You ask them what's going on?"
"Hey! Paladin's business, can that be considered breaking the vow?"
"Besides, monster girls are not human!"
.
Herbert has been reincarnated.
The good news is that he is a paladin.
The bad news is that he has to remain pure for his whole life after taking the "Purity Vow"!
Well, he was put on a magic ring at the beginning.
I have it in this life!
Not only that, he was also assigned to the prison to educate and reform the most vicious and terrifying alien prisoners.
Crazy dragons, fallen angels, dark elves, sirens, demons, devils...
I will reform them? Really?
Weak and helpless, he is no match for these monster girls, and can only hug his knees and tremble in the corner.
Just when Herbert thought that he could only restrain his lust for the rest of his life and die in this prison, he was forcibly blessed by a certain evil god and gained a special charm that fascinated all monsters.
Then...
Things started to get weird.
When Herbert entered the prison again, he found that the eyes of the monster girls who were originally hostile to him had changed - they were all greedy for my body! ?
It was also at this time that he suddenly realized that they might not be as scary as they looked.
Very worth reforming!
.
This book is also known as "Guide to Evaluating Different Race Girls" and "Raising Monster Girls in Prison"
[Fun] [No Morality] [Easy]
There are 5 million words of completed works, never eunuch, character guaranteed!