The Chronicles of the Dead and the Lionheart

To start with,

Skipping over all the disgusting and hard-to-understand details, here's the simple version of what happened.

As a 25-year-old hopeless gamer, one day I finally got my wish and transmigrated into an online game, proving my resolve by dying.

Then, while trying to conquer the princess, I accidentally… (beeped) the princess.

After that, I became the Demon King of this world and was hunted by the entire world.

That's all.

Your sister?

Your sister, aaaahhhhhhh! Aaaaaaaaah!