My paternal grandfather told me that he was almost killed in the Great Earthquake in Tokyo and its surroundings before the war. The day before the quake, he had a huge fight with his friend. The reason was very childish: they argued over who had first played with a certain wooden toy. Because of the fight, my grandfather decided not to visit his friend's villa the next day, which saved his life. However, his friend was tragically killed in the earthquake at the age of five. Looking back, I believe he was a true friend to my grandfather. Later, I found his friend's name in a record book about the earthquake; he was the second son of the Prime Minister who served immediately after the time of Japan's surrender, and was himself an Imperial prince.

Surprisingly, AI search has identified exact excerpts that I need from the teachings of famous Chinese Zen monks. I searched for a phrase in the records of Jìtán Zōnglè, who lived during the late Yuan and early Ming dynasties (1318–1391). 

I first tried Kyoto University's database, where it was difficult to find the specific title. However, the AI search found the exact same excerpt from the original anthology of Zen records published in China. 

Mixed Japanese script—specifically the use of kana and kanji—remains a significant obstacle for various AI models handling classical texts.

The phrase that I need is originated from Chapter 29 of 'Lǐjì' or Book of Rites, and Zen monks often refer to its 'kǒng zǐ xián jū piān' or 'Confucius at home at leisure' in their records. Anyway, it's nice to step forward for my investigation. 

A friend emailed me to say that a Buddhist temple 'Konji chou in' in Kamakura, Japan, was destroyed by fire. The temple is famous for its fire-protection talismans. What?! Are you kidding me? I guess the priest wasn't carrying one! No way.

Last month, I used a multi-agent AI system to create a fake persona that pretended to be me posting on this blog, similar to Torquemada. While it isn't my original idea—it actually traces back to Gödel's incompleteness theorems—I’m not particularly smart when it comes to mathematics.

Reviewing those posts created by the fake persona using the AI system has made me realize that I sounded like Tomás de Torquemada!

I appreciate Wakayama University for their generosity in publishing the database that contains the diary of Lord Miura Nagato-no-kami Tametoki. My investigation of the individual was successful because I gained access to the database.

I particularly appreciate Shuya Nakamura: Tea ceremony in the official diary of Murata Tametoki, house elder of the Kishu domain, Cultural Studies of Chanoyu (Journal of Kyoto University), Vol. 6. pp. 69-136, January 2026. I found the name of the individual in the page of 129 of this article. Unfortunately, the entire content of the article is written in Japanese.

Last night, I successfully identified the individual whose name was inscribed inside the lid of the wooden box. This breakthrough came after I shifted from automated AI searches in samurai registers to the manual examination of Tokugawa family documents available online through museum databases. Every single piece of this jigsaw puzzle is finally complete! I'm excited to share the news with him tomorrow, which happens to be a bank holiday in Japan. Meanwhile, disappointing as it is for someone working in this very field, I can't help but think: what a miserable job the AI did compared to a human eye!