One Piece: Supreme Check-In System - Chapter 49: Voidreign Kingdom Check-In

Intelligence without ambition is like a bird without wings.

Arthur Reynolds lived as a quiet, compassionate soul who loved to read and workout in his spare time, sacrificed himself to save his family, trading his own life for theirs.In death, his journey was far from over. Reborn into the mystical world of Sylvara as Raegar Blackwood, he discovers a land teeming with Aether, prestigious magic academies, perilous dungeons, and fearsome monsters.Join Raegar as he learns how to harnass his Fusion Magic to become a legend in the making. Witness him conquer dungeons, win tournements and become the strongest.

There is no master god, no system, no exchange, and some are just source codes that are fused in the mind to open up the world, not to be forced or suppressed, but to constantly go through in order to become powerful Look at my infinitely powerful source code …

- Description from uukanshu

His legendary class is The Husband Of Deathwill Sisters!

While other players went through common quests to get their classes, Alex started by getting a legendary class: Husband Of Deathwill Sisters! He got three beautiful wives from the start and the legendary castle!
What would his girlfriend and friends say about this once he reveals his class to them?
And what about Deathwill Sisters? What is their plight, and why would they suddenly get a husband?