Hyper-Kamiokande is an ultra-large water Cherenkov detector currently under construction in Kamioka-cho, Hida City, Gifu Prefecture. I applied for a lottery to visit the site but was unsuccessful. I have some commemorative stickers left over from the event and will offer them to fans who were unaware of it. ◾ Simple Guide: 1 booklet ◾ Stickers: 3 types Please refer to the photos.