This is a "hand-signed ball" from the "6th Hinata-sai" campaign benefit of the Hinatazaka46 message app. It is a hand-signed ball by Haruyo Yamaguchi, who has a strong connection to Yokohama Stadium and baseball. I didn't expect to actually win, so I decided to list it, thinking it would be better for another Haruyo Yamaguchi fan to have it. *I can also list a color ball signed by Haruyo Yamaguchi that I obtained at "MONSTER GROOVE2025." I will consider a discount if you purchase them together. Please comment.* Group Name: Hinatazaka46 Member Name: Haruyo Yamaguchi