Wow it looks awesome, this is the sort of thing I really love haha…
As I studied art for a while.
But I think the 26th is the next pokemon tcg event With these promo mats:
Not sure if people have seen, but maybe can share;
It’s going to be super hard to get these, as it’s limited to 1 per person, and 4000 yen entry cost per person.
I will do my best to attend both events on the 25th and 26th. If anyone’s in Japan. Come say hello 
or grab a beer.
But one thing I would be certain of… Arita would never sign cards like he did in Italy or the USA… Just hundreds of people’s items at once while he is in Japan in front of many people will cause jealousy. This is very bad in Japan, people line up hours and are so thankful to get one item only signed. Staff instruct the artists to only sign one item as well. If they do more, and others see. Also at pokemon events. Staff only give out 50-100 tickets which are valid for signatures. So only 50-100 sigs are made on a general pokemon event day.