An Abnormal Life Starting from The Rising of the Shield Hero

What happens when a fifth person is summoned in The Rising of the Shield Hero, and the protagonist arrives in another world without even being a hero? What will he, as someone who transmigrated, change?

Will he become a terrifying Demon King who makes children cry?

A beloved superhero and hero, cheered on by everyone?

Or will he just do both?

Are you a ham?

Hey, even though I hatched you, don't call me Mom!!!

Then should I call you Dad?

(Well, that's enough, everyone. This is embarrassing old history. Go read The Unusual Life That Began with The Unusual Hero's Rise instead.)