Astrand, they're the cosmic guardian of the four realms. Their realm was higher than Heaven, created by god to protect their universe. They exterminate any intruders to their domain. Leaving a few are left alive. Those are creatures of malice. The astrand had sealed them with ancient technique. Astrand had failed their duty. Evils had broken the seal. Most of them died in battle against evils, while others fled from battle. Those who fled a battle are a disgrace as astrand. Even if all they want is to live, they know that evil will not stop. Choosing valiant death is the way of honor. They sacrifice themself to imprison evils in their realm while connecting all realms through gates. Kenji had fled a battle. His royal blood doesn't bypass the rules. Still, he is the last astrand. He had fled to other realms. He can't run anymore and has no option except to fight.