Behemoth's Pet - Chapter 125: One of Seven Great Demon King, Belphegor

He, without doubt hates her.
What did she do to deserve his hate?
The person who she treated well like a brother did not even bother to notice it...

Years passed…

He needs to get married.
He needed a wife.
So she offered herself.
It was a marriage that will benefit both parties he said.

This is a very interesting thing. It is obviously dim and black, but it can emit a golden light, which makes people deeply fascinated by it…

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System: You are the only human who meets the binding requirements of this system, please bind with me!