This universe is starting to enter into leagandry age because new teen age kids are grandsons and granddaughter of leagandry masters who saved the world from the attack of monsters killing the humanity.

Now there is a college where this great masters learn about martial arts. The name of the college is Strom college it's located in the middle of the Storm Country.

These country is divided by four parts in first part where noble living. In second part where ministers living who are backed by noble families.On third part where normal people living.In fourth part where slaves and orphans will living.

Everyone in these country tries to graduate from Strom college because where one respects them and has power to join in royal soldier. Royal family hold powers of countries they control noble families

On fourth part of country there lives a kid who was orphanage from his five years old now his age 14 years his name is Kai