The Magical World of Tradiumus

A useless F-Rank, a beautiful mother in danger, and a one-of-a-kind System.

Welcome to Tradiumus, a colossal walled medieval kingdom where Beast Tamers absolutely dominate everything. Bonding with a creature grants superhuman physical power, and the rank of your egg (from F to S) dictates whether you are born to rule or to be trampled.
You are an only child and live in absolute poverty with your mother, Elaria, a young and extremely beautiful woman with a body of exaggeratedly voluptuous proportions.
Your noble family treats you like trash, and the abusive landlord tries to make advances on her using rent debts. With her life savings, your mother bet on your future and bought you the cheapest egg on the market: an F-Rank lizard.
But the world doesn't know that your lizard hides 4 legendary evolution phases and that you are the only one capable of seeing an RPG-style "Status Window".
Will you be able to train in the dangerous Forbidden Forest, enter the gigantic Academy castle, and accumulate enough strength to protect your mother and get revenge on those who humiliated you?
The shell is cracking... your underdog story begins now!