The book is not about Ichimoku Cloud. It introduces another seldom-known Japanese technical analysis technique, Heikin Ashi (平均足), that is different from the old-aged candlestick (陰線陽線 / 陰陽燭). In fact, Heikin Ashi is a very powerful technique to help you spot the current trend and the reversal points. When combined with Ichimoku Cloud, Heikin Ashi can further enhance your “at a glance” chart-reading speed. Highly recommended. The same author also has an advanced edition on this topic, FX 常勝の平均足 ブレイクトレード.