★ Author Jun Sasaki is an associate professor at the University of Shimonoseki and a former mathematics instructor in the Japan Maritime Self-Defense Force, where he trained pilot candidates. He received the Third-Class Commendation twice during his military service.
★ His method pairs scientific evidence with "+α" — a reproducible learning method tested on the ground in Self-Defense Force training. Spaced learning, body-based learning, and sleep-environment optimization are all techniques he has used with real students.
★ The book describes the "hanging-cat experiment": two cats see the same view, one walks on its own and one is carried. The one that walks learns to avoid obstacles; the one that is carried does not. The point: watching is not enough — you have to move.
★ He re-tested "common-sense" study methods such as the Ebbinghaus forgetting curve and Harvard University research. Some are scientifically sound yet fail in real settings. He tells you which ones work and which need conditions attached.
★ This book is for people who "work hard yet see no results." It does not tell you to push harder; it tells you to check first whether your direction is right.

"You work hard yet see no results." "You memorize things yet forget them almost at once."… Your study methods may be scientifically wrong.

The book re-examines the "common-sense" study methods long taken on trust — the Ebbinghaus forgetting curve, research from Harvard University, and others. Drawing on cases from real educational settings, and applying scientific evidence correctly, it reveals the learning mechanism by which anyone can produce results.

Based on his experience as a mathematics instructor for pilot candidates in the Japan Maritime Self-Defense Force under the Ministry of Defense, author Jun Sasaki proposes a strategic study method that delivers real results in a short period. He introduces practical methods such as spaced learning, the habit of learning with the body, and sleep-environment optimization.

Chapter 1 breaks down misunderstandings about traditional study methods; Chapter 2 adjusts the habits that produce results; from Chapter 3 onward, ultra-efficient learning techniques are revealed. This book is for anyone troubled by "no motivation," "no time," or "can't remember."

Jun Sasaki
Associate professor at the Institute for Education and Teacher Training, University of Shimonoseki. Born in 1980 in Sendai, Miyagi Prefecture. Graduated from the Department of Mathematics, Faculty of Science (First Division), Tokyo University of Science, and completed the doctoral course in mathematics at the Graduate School of Science, Tohoku University. He has served as a mathematics instructor at the Yoyogi Seminar cram school and as a mathematics instructor in the Japan Maritime Self-Defense Force under the Ministry of Defense, and has held his current post since April 2022. During his time in the Maritime Self-Defense Force, he was recognized for his major contribution to the education of pilot candidates and received the "Third-Class Commendation" (awarded to those with notable merit in the performance of duties, or those who make excellent technical inventions) — exceptionally rare for a civilian employee.
His publications include "AI Implementation Certification Formula Text, Grade A" (Daigaku Kyoiku Shuppan), "Civil Service Exam: Entry-Level Math Reasoning Without Confusion" (Jitsumu Kyoiku Shuppan), and "Explaining Everyday Things with Mathematics" (SB Creative).

1 The Truths of Learning That Start Producing Results Today
- The Truth of Learning 1: Even with scientific evidence, you may still get no results
- The Truth of Learning 2: The video-learning trap behind "easy to understand"
- The Truth of Learning 3: You learn dramatically more by learning from mistakes

2 The Strategic Study Method for Steadily Rising Grades
- Don't copy the Ebbinghaus forgetting curve straight into your study
- Memorize efficiently with "desirable difficulties" and "meaningful association"
- The real purpose of highlighters and how to use them correctly
- The ultimate method for turning knowledge from points to lines to surfaces
- Study with the mindset of teaching someone else, and understanding and memory rise sharply
- The trap of easy-to-follow classes, and examples of how to avoid it
- Make good use of travel time — what is effective audio learning on your phone?

3 The Strategic Way to Set Goals That Leave Results
- Visualize intermediate results and keep at it
- The "pass-experience journal" — how to handle this "fresh item" before it spoils
- Take a test and fail, to find out where you really stand
- Not the "deviation value," but calculating the numbers that matter
- Psychologically ultra-efficient! What is the "fragment-time" technique?
- The technique of not carrying dawdling into your next study session

4 Create Focus That Doesn't Depend on Motivation — by Mechanism!
- Understand the truth about "motivation" and use it for study!
- Move your body and you control your learning!
- What is the short cleaning method that switches you into study mode?
- The scientific reason why just having your phone nearby lowers your grades
- These two are what steal your focus!
- Three recommended techniques for sustained focus
- Use the bandwagon effect to raise focus and grades!

5 Strategically Adjust the Habits of Continuous Learning
- Why can't you make it a habit!? The reason for "three days on, two days off"
- Build the "key habit" that connects to studying
- Keep people who are good at praising near you
- The sleep adjustments that maximize learning effectiveness