Is the anime character I'm looking for on sale...?

I'm looking for it with a 7-head avatar (?), but I don't know if I can buy what I want. Discovered Anime Characters: 　Frieren 　Hatsune Miku 　Kasane Teto 　Furina 　Yae Miko 　Rem 　Ram (Re:Zero) 　Natsuki Subaru 　Milim Nava 　Chou Zetsu Sai Kawa Tenshi-chan 　Ame-chan 　Goto Hitori 　Yani Neko (Yaniko) 　Hu Tao (Genshin) 　Shun Mizushino