A.G.II.D.C. ~RPG Gakuen 2.0 Circus Shijou Saidai no Kiki!?~

This is the first title by STELLA, a separate brand created from CIRCUS. A thousand years ago, the legendary hero defeated the maou. Now his descendant Masamune begins his own path towards becoming a hero, but then a girl with a great sense of justice wanted to become his disciple. However, she is the descendant of the maou! She creates the ‘Brave Rangers’ (i.e. student council) and drags him along to the dungeon to defeat evil.

[From Hau! Omochikaeri~]