Pokemon: The Nightmare That Emerged from the Frozen Wastes

After collapsing and dying from overwork as a newcomer in the workplace, he transmigrates into the Pokemon world and becomes an orphan burdened with a blood feud. He wanders the icy wilderness for years before arriving in the Hoenn Region, where he eventually rises to greatness and avenges his family.

The protagonist's family is wiped out in Snowpoint City. His parents send him to the Unova Region, where he completes his revenge with a Snorunt by his side.

There is a System, but its only function is to check stats. One female lead.