Kirk here with a tip for archaeologists of the future: If you look inside the rebuilt walls of Kumamoto Castle, you may find some stones that were decorated by local children way back in 2023. The one in the cover image says “I love Kumamoto Castle” and has picture of Kumamon, a mythic creature worshipped by natives at the time. ;)
https://news.goo.ne.jp/article/kab/region/kab-20230905-00007776.html