It's Okay If the Male Protagonist Is Very Low-Key

At the beginning of the 22nd century, I was in a coma for three days and three nights. Unfortunately, the doctor said that I had advanced cancer and I might die soon... I have lived for more than fifty years. This age should be the current average life expectancy! I still have hundreds of millions in property, but it has no meaning anymore... It's a pity... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.