Fixten

In a world where summoners wield the power to call forth vampires, elves, angels, demons, and all humanoid creatures from across the realms, Nathan found himself unable to summon beings except from beasts. 

However, those beasts are not ordinary beasts. They are divine beings who once stood at the same level, if not higher, than the legendary creatures the world ever knew. 

Casting his gaze to the left, Nathan sees numerous summoners accompanied by the likes of demon kings, archangels, vampire progenitors, and other legendary beings. Turning to the right, a massive army of alien symbiotes is waiting to attack. 

There was no fear in his eyes, because standing on his left is a majestic wolf who managed to kill a god, the legendary eight-headed serpent coils on his right, above him is the bird who is glowing like the sun, and behind him is a dragon that once gnawed the roots of the world tree. 

“Let the war begin.”

Summoners War: Only I Summoned Divine Beasts

Nathan wanted to say something, but Charlotte simply didn't give him the chance to refute them. She said, "I will explain your circumstances to Risa. She definitely doesn't want you to sacrifice yourself like this.

"I'm not banning it forever. Just please… give me some time to get the answer as to whether it has a side effect or not. Please…"

Nathan bit his lips. "Fine. I'll follow your suggestion for the time being."

Anubis extended his paw. "In that case, use my blood. Since you can see my detailed information, you can monitor whether my potential and other things, including my level, decrease or not after losing my blood. Then, do some other tests."

"…" Charlotte thought for a moment. That was indeed reasonable. Both of them had blood much stronger than normal, so this would be a good sample to get the answer.

After some consideration, she nodded. "We could do that."

Alter the World's Record (Bonus)