The world of Embrie City

In this world where at 16 years old you are given a gaunlet to create powerful monsters but with a twist, monsters have rareities and are based on your standard gotcha system with C, R, SR, SSR, and UR but UR are hidden evolutions thats right the highest base summon is an SR but any rarity and reach UR but you must meet specific rules, in the world you the player and everyone else has a power level determined by there combined monsters power, you can have 3 monsters active at a time and can roam the world with you, but these monsters depending on rarity and monster type can appear more human