Even If He's Not the Protagonist, He Still Has to Help with the Aftermath?

A completely obese nerd who didn't know how difficult society is, so he died inexplicably, and then traveled to a different world, but ended up not being the protagonist? God is really unfair to me! "What? Louder I didn't hear you!!!" "I said, you are so loving!" See how I survive in a different world! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.