You are an ordinary person who has been average all your life, but before you die you decide to go crazy.
You purchased all the services at the funeral with the intention of having a little joke with your family before you die.
You must admit that they did a pretty good job. Not only your family, but even everyone began to believe that you were once a Kamen Rider, Ultraman, special forces or something else.
As for why you know this?
Because hundreds of years later, when faced with the invasion of enemies from another world, the newly discovered magic, technology, metaphysics, and physical training of humans will not be able to defeat it. You were resurrected as the ultimate weapon, a hero in human history.
And your only skill is - flat A block.
Motto: Don't joke around