Beast Taming Refunds: Invincible from F Rank

Fang Zhuo transmigrated to a world where everyone was a Beast Tamer. From the start, he bound himself to the Beast Taming Rebate System. By nurturing his contracted spirits, he could receive benefits himself.

Summon an S-rank contracted spirit? No way! Even if it reaches SSS rank, it'll only go up two ranks! He has to start with an F-rank contracted spirit!

Your contracted spirit has reached E rank. Rebate received: You have advanced to Bronze-rank Beast Tamer.

Your contracted spirit has learned a skill: Super Defense. Rebate received: Your defense has increased tenfold.

Your contracted spirit's Phasing skill has reached Lv. 10. Rebate received: You have learned the Invisibility skill.

At the school's arena: "Teacher! This is supposed to be a Beast Taming match, so why is Fang Zhuo just watching while his contracted spirit fights?"

In a pocket dimension: "It's one thing for his contracted spirit to be that strong, but Fang Zhuo himself is even stronger! This is ridiculous!"

Reporter: "Fang Zhuo, how did you manage to do that?"

Fang Zhuo: "Don't ask. The answer is always that I cheat."

This novel and its characters are entirely fictional. Any resemblance is purely coincidental. Please do not imitate.