Peony

If he took his shirt off, he would have to be the one sitting because the boy on the end is wearing a necklace but that looks like Joseph. I think she pixelated the people in the background as a courtesy because she didn't have their permission, and added the "I'm not telling you that #Yuzu is on the pic too" because she knew everyone would assume he was in the photo since he was in their class. It was misinterpreted because of the emojis and I think the excitement and reposting caused her to delete the photo and the other ones she took with the stars. It was in the June 2016 Yuzu Days マイレピ by P&G (https://www.myrepi.com/tag/yuzu-days). It requires an account but here is the relevant quote: 20歳になって仙台に帰った時、成人式のお祝いで祖父と従兄弟と一緒に初めてお酒を飲みました。後から父も仲間に入ってみんなで飲んだのですが、ろれつが回らなくなりました。日本酒はおいしかったけど、体質的にあまり向いていないかもしれないと思いました。アスリートとしては、お酒が飲めなくてちょうど良かったです（笑）。His family celebrated his coming of age day after he was released the hospital. I remember because he wore a hakama and it was well-received.

I think the three boys on the end were Cha Jun-hwan, Joseph Phan, and Nishiyama Shingo because Yuzuru was wearing his grey and black under armour shirt with long sleeves in another photo. It could be the blurriness of Victoria's photo but the arms also look too short for him. Someone on Golden Skate said that Yuzuru took the black and white photo of Jason, Evgenia and one of the summer camp students, but an unrelated Russian fan added that when they reposted the photo on their own IG account. The original just had a #yuzuruhanyu hashtag like her other photo at the club. お酒飲めない means you can't handle alcohol, not that you don't drink (飲まない). He said he tried sake when he was celebrating his coming of age day with his family and found out his body doesn't take it well. So I think he is either allergic or a lightweight. I have a friend (also Japanese) who is allergic to alcohol and just one sip of wine will make him very very drunk.