Ultraman: After I Died, I Left My Fortune to My Best Bro

No female lead, a story set more than forty years after Blazar

After I died, I left my entire estate to my best friend. The problem was, I was so poor that my whole inheritance amounted to just 6.666 yuan. The System didn’t show up until I’d turned into a ghost. Every time my best friend spends a single yuan, I get ten million ghost coins... But he just won’t spend it. He plans to keep those six yuan forever as a memento of me. I... I was so mad I came back to life.