The reason Heero was interested in the dungeon was that the dungeon shared similarity to his old world, Dramonia.
The first dungeon, a familiar environment to the beast's territory and the second dungeon was the specter's core territory.
He wanted to investigate the dungeon whether it had a connection to his old world. After all, he had a Master who he regarded as a father and the seven mothers who had been taking care of him since he lost his family.
Also, he had an unfinished matter on Dramonia, his revenge. Even though he had given up his dream to be a hero, he had not given up his revenge yet.
"Hah…" Heero let out a sigh as his unpleasant past flashed on his mind.
Thump! Thump! Thump!
A series of footsteps resounded as the ground shook a little. It was a sign of his disciples returning from their running routine.
Wearing training circlets that weighed up to twenty kilos, the ground was bound to shake a little as 162 people ran.