I'm Not The Protagonist?

Becoming an adventurer in a fantasy world isn't the first thing people expect when they die. For me, it's a dream come true.

Becoming an overpowered hero and getting a harem is another dream of mine, but it was a dream I never achieved. Instead, my adopted son was the hero and subsequental girl magnet.

And what's this about using me as a stepping stone for my son's eventual rise to glory?

*Disclaimer: I do not own the image used as the cover for this story.*