It's regression, the guy is an expert with swords i think. He saved his sister and parents from a big monster that killed them in his past life. His sister also possess a huge amount of mana and saved her brother by performing a miracle in front of the monster.
It's regression, the guy is an expert with swords i think. He saved his sister and parents from a big monster that killed them in his past life. His sister also possess a huge amount of mana and saved her brother by performing a miracle in front of the monster.