At the Ohoshi Laboratory, we have optimized an e‑book viewer specifically for learning purposes, obtained a patent for it,

 and are now preparing it for practical use. This idea received the Encouragement Award at the 6th IMF Japan Awards. 

It will make studying much easier and far more enjoyable.

If there is sufficient demand, 

we will secure the necessary funding to make "this e‑book viewer" and to offer it free of charge.

Please click the button below and answer the “simple questionnaire” to let us know your demand.

This e‑book viewer supports three types of learning scenarios.

Scene I : Understanding = Learning

1) Selecting unknown text in the e‑book with the mouse and clicking a button 

triggers an internet search. The selected text is saved as the question on a study card, 

and the text from the searched website is saved as the answer.

   (Even if you cannot read certain kanji, you can still look them up by selecting text. 

No need to buy a dictionary, and study cards can be created easily.)

2) Watch explanatory videos related to the text from the book at increased playback speed, 

pausing occasionally to create study cards.

3) Ask a generative AI about concepts you don’t understand, 

saving your question as the question on a study card and the AI’s response as the answer.

4) Have the generative AI create related practice questions, 

saving the generated questions and answers to study cards.

5) Search for past exam questions, saving the question to the study card’s question section, 

the answer to the answer section, and the explanation to the remarks section.

Scene II : Memory = Review (Active Recall Method)

1) Immediately after studying, retrieve only the newly created study cards 

                            and review the newly gained content.  

  (According to Ebbinghaus’s forgetting curve, the first 20 minutes after learning is 

when forgetting occurs most rapidly.)

2) Before going to bed, the next day, three days later, one week later, and two weeks later, 

retrieve the cards with a single click and review them.

  (Humans consolidate memory during sleep, so reviewing before bed helps retention. 

This also applies the spaced‑repetition method.)

3) If you forget something, clicking a button on the study card reopens the e‑book viewer, 

displaying the exact page that was open when the card was created, 

allowing you to quickly confirm the forgotten content.

4) Study card review can also be done on a smartphone, 

making it easy to review while commuting or when away from home.

Scene III : Application = Exam Preparation (e.g., JLPT)

1) Before an exam, classify study cards by subject, 

then retrieve all cards related to the exam subject for a complete review.

   (This works not only for final exams but also for extracting only the cards relevant 

to midterms, finals, or end‑of‑year school tests.)

2) Sort the subject‑specific card groups=1) by the likelihood of appearing on the exam, 

allowing you to review in order of importance.

3) Right before the exam, extract only the cards you previously answered incorrectly, 

enabling focused reinforcement of your weak areas.

Features

★ Even without attending school, you can study independently simply by purchasing the books. 

　 No dictionary is needed—you can watch explanatory videos, ask questions to AI, 

and review through spaced repetition.

★ You can use it while studying multiple subjects in parallel, 

such as English, history, constitutional law, civil law, and criminal law.

★ It can also be used for Japanese-language learning through manga, digital school textbooks, 

study guides, and preparation for various qualifications and certification exams.

★ Since e‑books are available at the same price as in Japan and no dictionary is required, 

　 the financial burden is light, making it easy to start learning Japanese.

Business Model

　We distribute this “e‑book viewer” free of charge 

through an e‑commerce site that sells textbooks, problem sets, and similar materials.

　In other words, as long as you purchase the e‑books at their regular price —just as before—

                        you can use the e‑book viewer at no additional cost.

What I do not want you to misunderstand is that this software was not developed because we place special importance on rote memorization. We created it after witnessing many learners struggle—spending enormous amounts of time and effort, worrying, and ultimately giving up because memorization felt too difficult. We wanted to find a way to make that painful “task of remembering” easier and more effective, and that desire led to the development of this software.

If the process of remembering and reviewing can be automated and simplified, 

studying becomes much easier and far more enjoyable.

Conclusion: This “e‑book viewer” draws out the latent convenience inherent in e‑books, 

simplifies studying, and supports learners.

If there is sufficient demand from you, we would like to open an online bookstore that uses this e‑book viewer.

Please share your evaluation by voting in the “simple questionnaire” using the button below.

We sincerely appreciate your support.