First, please review these results

For about 23 years from 2003 to 2026, measured with USD/JPY M5Tick Data Managerbacktest results.
These results cover all market conditions, including the Lehman Shock, Corona Shock, and historically weak yen periods.

A 23-year backtest created with Tick Data Manager shows a modeling quality of 99.9, making it a reliable backtest that accounts for spreads and slippage.
Under this environment, the win rate exceeds 80%, and the maximum drawdown is 3.83%.
In other words, as you can see from a completely upward-sloping balance chart, while maintaining a win rate of over 80% for 23 years,
the maximum losing trade only cost 4% of the balance.
This is indeed an exceptional low-risk, high-win-rate EA.
Of course, there are reasons behind these results...
(By the way, with compounding ON, it would be over 300 million yen in profit...)

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Why this performance is possible

This EA is not simply a mechanical trader.
Three-layer four-AI-filter to screen trades, two types of settlement modes automatically used depending on the market.

① 3-layer four-AI filters to select only "winning trades"

Entry candidates pass all four gates below to be actually traded. (Counts are from the backtest)
Because entry accuracy is very high, no averaging down is used, achieving an 80% win rate.

② Two settlement modes are automatically used according to the market

The mode-selection AI chooses the most suitable settlement method for each trade. This is the biggest feature of this EA.
The two settlement modes are not simply TP/SL; they monitor technical indicators and dynamically adjust TP/SL to aim for big profits and small losses.

In the crescent moon mode, there is also a profit protection function.

③ Certainty Lot Sizing (can be OFF in settings)

Instead of trading all positions with the same lot, the EA automatically adjusts the lot size according to the AI-measured "confidence" of each trade. Heavier on confident trades, lighter on cautious ones—focusing funds on high-quality opportunities. (Added in ver.7)

If ON, it automatically scales to your configured lot size.
Note: "Confidence" is calculated from price data like RSI, so due to broker price differences, the same trade may have a different lot multiplier, and the number of lots in the official demo account may differ slightly. This is a natural behavior of the system. If OFF, the set lot remains constant.

④ Thorough tuning for USD/JPY M5, continues to earn regardless of market conditions

This EA is not a universal EA that handles all currency pairs.Specialized for USD/JPY M5, thoroughly studying and optimizing its price move tendencies.

Focusing on a single currency pair achieves precision unattainable by generic EAs.
Mikazuki does not depend on a specific market direction.Whether USD/JPY rises in a yen weakness or falls in a yen strength, it has consistently generated profit. In fact, backtests show that downward (yen-strong) phases yield higher annual profit and win rate as well. Because the design works in both directions, this provides stability.

These complex logics and AI training data are included, and the EA source code reaches 49,522 lines!!!

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Operation Guide

Recommended settings and operational information to use this EA with confidence.

①Lot settings

Mikazuki allows separate lot settings for Buy and Sell. You can freely adjust risk allocation for both directions.

② Compounding to accelerate wealth

This EA includes automatic compoundingthat increases lot size as profits grow, aiming for snowball-style wealth formation.

Risk tolerance (0.10–0.50; initial 0.20)

This determines how aggressively to increase lots when compounding. It roughly indicates what portion of funds you are willing to temporarily lose (drawdown). Higher values accelerate wealth growth but deepen drawdowns.

③ Parameter settings

All parameters are tuned to maximize performance with default initial settings (optimized).

Basically, no changes are needed. This EA is USDJPY・M5専用.

④ Server time settings (broker time adjustment)
This EA is designed based on the server time of official forward brokers (Winter GMT+2 / Summer GMT+3, US Summer Time) .
If your broker's clock differs, calibrate using these four parameters.In most domestic MT4 brokers, the default values work.


⑤ Recommended environment

⑥ Cautions for use

■ Frequently asked questions and answers
The developer answers questions actually received from customers.

■ A diagnostic result by AI to assess whether this EA is really safe, along with explanations on how to choose an EA, is published. If interested, please take a look.

https://www.gogojungle.co.jp/finance/navi/articles/119588