Kaiba in Doulou Dalu KDD

Seto Kaiba died after many years, he was wondering what next life would be like but, instead of a normal after-life, he was offered a proposition he could never deny from something that he knew very well.
Now he is in the Doulou Dalu world, a world full of overpowered beings and dangers everywhere, and he will fight to reach his rightful place, to become the supreme being he truly is.
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I am doing this story just as a test and because the idea could not leave my head, any ideas and suggestions are more than appreciated. There will be some amont of OOC in this, but I hope it isn't that great as I intend to make this Kaiba based in his best version. The Abridged Kaiba.