Pokémon [Nightmare Emerging from the Ice Field]

A social worker who just entered the workplace suddenly died and his soul traveled through the Pokémon world, becoming an orphan with a blood revenge. He wandered in the ice field for several years, came to the Hoenn region, and finally became a genius and finally avenged his blood revenge. The protagonist's family was wiped out in Qifeng City, and he was sent to the Hezhong area by his parents, where he took his revenge with a snow boy. There is a system but its function is only to view data, single female protagonist