Recently, some readers have asked if there is a group. Originally, I planned to put it on the shelves and build a group again.

But the code word tonight, suddenly on a whim, I think it's better to set up a group in advance, in case someone wants to come in and chat.

So readers who want to join the group can search for the deduction group (993097771).

...Let’s do this first, I hope there are not too few people (?????)