In the year 2019 Earth experienced a world-wide event called "the breach" where endless waves of monsters invaded the planet through portals. Humans fought a war for two straight years without gaining the upper hand against the powerful monster hordes. It wasn't until world leaders came together and founded the Interdimensional Ranger Association (IRA) that things began to change in humanity's favor. The IRA trained people to become rangers capable of taming monsters and using them to fight. With the help of rangers around the globe the monster hoards were pushed back and scientists created the Nexus to prevent more portals from opening up on Earth.

Ten years later and now monsters are a central aspect of human society. Many children wish to grow up and become rangers in order to train monsters and explore the frontier. Our protagonist, Impiro Fushima, is no different. Now at the age of 18 he's able to become a Ranger once he graduates from high school. However, one thing sticks out about Impiro: after taming his first monster he receives a special status window that allows him to view detailed information about monsters! With this he could become the strongest ranger ever!

Follow along Impiro's journey to explore the infinite frontier and learn everything there is about the monster world!

Inspired by Monster Pet Evolution.