Sinopsis

The Elf Princess Arc's Climax Is Here! Motivated by fear, Auroro rushes back to Viridia!
Cerulean-in-the-Mountain is safe, and Auroro's party has reunited. But now, they've learned of Princess Veerie's precarious situation and that Auroro may have endangered her life. Nothing is certain, but as far as Auroro's concerned, her brother and the Hero of the forest elves, Virid, is the one that needs to be listened to.

"If he thinks something is wrong, then it must be."

Spurred on by faith in a person that terrifies him, Auroro heads to Viridia, Rynissie, Chesheer, and their new allies, Lian and Hedgrie.
What awaits them is...

Monster Girl Collection Volume 4 continues the story of one man and his leading ladies as they navigate the mess that they've found themselves in.
The blazing hot battle fantasy with over-the-top battles, complex magic, sentient monster girls, wild monster girls, and a romantic adventure is here.