Some unexpected situations have been resolved, and the book will be updated steadily every day. Doomsday Flow has always been a subject I've wanted to write about, and I'm glad I was finally able to write about it once.

Many book friends have asked me what to do with that book covering the sky with one hand. What can I do? When I have time, I'll write some and update it one after another.

After all, it's no longer worth giving money to cover the sky with one hand, code words, or code words that can make money!

Thank you for your forgiveness.