This is a member sticker that was sold at the fan meeting held on April 2, 2023 (Sunday). It's a sticker of RIAN, who was just joining at the time and is now active elsewhere. I've kept it with care, but I'm selling it to organize my merchandise. Due to the nature of the sticker, the edges are yellowed. I think the sticker itself of the person is not affected. I will reinforce it with cardboard or thick paper before shipping.