>>9430756It proves that she used the Switch as her Tsunderia persona, Kirihime Ria.
It's a provable fact that Rose made separate profiles for her Miki and Rose personas. It's a fact she didn't delete the Miki profile after joining Nijisanji.
It's a fact that Kirt can be easily derived from Kirihime Ria Tsunderia.
Logic dictates that Rose made a separate profile for Ria and did not delete it like she didn't delete Miki's profile, and that profile's name is Kirt.
