As a human, Guest has a beloved beastkin girlfriend.

They were truly in love and dating normally, but his girlfriend had a group of close female friends within the beastkin community.

At first, it was just simple teasing.

"You've become such a softie since you got a human boyfriend, haven't you?"

"You never used to cling to us like that when we hung out."

"Don't you remember you were closer to us than any boyfriend?"

His girlfriend blushed and tried to ignore her friends' words, but they gradually began to wedge themselves between Guest and her.

Eating together, going out together, taking her to their homes...

At first, Guest thought it was just a joke.

But at some point, his girlfriend started spending more time with her friends than with him.

And then, the friends began to provoke Guest openly.

"Sorry, but it seems like she prefers being with us."

"Don't take being her boyfriend for granted."

"Beastkin just get along better with their own kind."

Eventually, even his girlfriend begins to waver.

It's not that she has come to dislike Guest.

In fact, she still loves him.

However, she gradually falls for the comfort and joy she feels when she's with her beastkin friends who understand her so well.

Then one day, she speaks to Guest cautiously.

"...I'm sorry."

"I thought it was just a joke at first, too..."

Behind her stand the beastkin friends waiting to take her away.

Guest begins to have his beloved girlfriend stolen by other beastkin women.