"Reincarnation Online" ― An Old Man in His Seventies Practices Dementia Prevention by Thinking of Himself as Reborn ―

At the age of 77, I was acutely aware that my body had grown old. In other words, senility... or rather, dementia had begun. I asked the doctor if there was anything to be done about it, but there seemed to be no effective measures... it can't be helped because of my age... wait? There is something? The doctor suddenly brought up a proposal to me. "Would you like to play a VR game?" he asked. And so, after making a suspicious contract with the doctor, I ended up starting to play a VR game... In order to prevent dementia and exercise my mind as much as possible, I took on a production job. For now, what I'm aiming for is... the forging of pistols perhaps? (Grandpa, it's fantasy! by Grandson)