Derina, Finn's mother, was an exceptional mercenary. She was not the strongest by any means, but she was not weak either. She was known as a Saintess during her time as a mercenary due to her extremely good healing capabilities.
His father, on the other hand, was a brute who had muscles for brains, he was one of the top brass in the town. He was so cold and ruthless that people began to call him the blood-soaked warrior. The couple, though only comrades at that time, were in a mercenary group of four.
Through countless life or death battles, the group had unquestioning trust for each other. The brute known as the blood-soaked warrior slowly fell in love with the saintess in their party.
Their love followed a marriage and a happy time for the party, they decided to not take any commissions for a while and just enjoy their life. That decision was taken by the captain of their group, who was Finn's father.