Traveller of Two Worlds

What will you do if you somehow were able to travel between two world?. Harem? Wealth? Power? Adventure?... Sai Mies was able to travel between two worlds Earth and Fantasma, With that ability he swore to changed his mundane life to the better. Each steps he take will bring him closer to his aim, to become the most wealthiest and powerful man in both worlds P/s The image wasn't mine, i wil take it down if asked to. :) tq.