ravs? If you want fan fics, head to fanfiction.net or royalroadl, or there's In another world with naruto system....
Everybody Loves Soul Pets It is about a orphan on an island who has a demon beast sealed inside him. He is trying to be a soul pet master and ends up taming a fox monster. The monsters can learn moves, level up, and even evolve. Edit: Sorry I remembered the name wrong it is actually, The Charm of Soul Pets.