Everyone Abandoned This Cursed Succubus — I Contracted Her and She Turned Out SSS-Rank!

The moment my summoned Beast swore loyalty to someone else, the whole ceremony erupted in laughter.
My Holy Angel — an absurdly rare Epic-rank Beast — took one look at a rich kid and dropped to one knee for him instead. Most Tamers would have collapsed on the spot. I slapped a ten-million price tag on it and sold it before anyone stopped laughing. A disloyal Beast is a liability. I knew that. What I didn't know yet was that losing the Angel was the best thing that ever happened to me.
As compensation, I got pick of anything in the Apex Guild shop. Third floor — all Common and Elite ranks. Nothing worth my time. So I asked to see the basement. The rejects. The ones scheduled for destruction the next morning.
That's where I found her.
A Succubus crammed into a tiny cage, face covered in jagged curse markings, spirit completely shattered. The staff member looked at her with open disgust. Everyone else saw a permanently Level One creature with no future.
My Status Panel told a different story: true Potential Rank — Epic Stage Nine. One step from Legendary.
I didn't hesitate for a single second.
While the ceremony crowd was still laughing at the boy whose Angel walked away, I was signing a Bond contract with the most powerful Beast anyone had ever overlooked — a girl who had given up on ever being chosen.
She called me \