Three years of discretionary trading experience, two years of EA development and operation experience. While my main job is busy, I considered how I could continue facing the market, and arrived at the choice of EA development. The goal is simple. To have AI reproduce exactly the discretionary trading I envision. The current focus is on developing an price-predicting AI trading EA using Python and reinforcement learning. However, this field requires vast data and long validation periods. Therefore, at this stage I am developing and releasing an MT4 indicator-based EA where the logic can be clearly verified. Through FX, EAs (automatic trading), and reinforcement learning, I verify "why this logic wins and why it loses." I write code and perform backtests as well, but what I value most is not the results but making the reasoning behind them clear. There is no 100% correct answer in the market. That is why I believe there is meaning in continuous verification and improvement. Investment Navigator shares not the win rate or profit figures, but the thinking behind entries and decisions.