H4610 Riko Chida - --

Wait, μ's members have school IDs, but I'm not sure if H4610 is one of them. Let me verify. The members are Honoka Kominami, Umi Sonoda, Kotori Minami, Eli, Nozomi Tojo, Hanayo Koizumi, Rin Hoshizora, Nagisa Hazuki, and Chika Yukihira. None of them have a model number like H4610. So maybe the user confused the model numbers with something else.