Revenge That Begins in Fantasyland

Reborn in another world, he was protected by his sister under his wings. After his sister's death, he awakened, so he transformed into a cold-blooded god of war, guarding his own plane until he died in battle. Before his death, he found the culprit who killed his sister, but could not take revenge. In the endless resentment, his soul was saved by the mysterious system, and he began a journey to become stronger in all worlds. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.