I Am the God of Futures in Japan

Young people in the 21st century travel to Japan. Unexpectedly, I met a gambling dad. There is a school beauty sister at home, and a mother who doesn't know anything. Life is difficult because his gambling addict father is in debt. Fortunately, the protagonist is a capital tycoon and dominates the capital market. Let's see how the protagonist saves his sister and at the same time flies into the Japanese capital market. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.