IRyS has a really interesting gap moe
She's always so dignified and beautiful on stage, has strong and deliberate movements, tends to sing serious songs, sings energetically no matter what she's singing, she looks taller with longer legs and bigger breasts somehow when she's on stage
....but it's in stark contrast with her normal streams where she's calling succulents "sucklings" or doing a kindergartner voice or going "eeeee??? irisuuu wakannaiiindaaaa.... shaaan-nai-naaaa" or going IM A PISKUS!! out of nowhere, is randomly incredibly wide for an entire stream or forgets to change her outro from non-hamster voice for like several consecutive streams, rants about allegedly non-BL anime series for dozens of minutes
Somehow she becomes "cool" on stage, feeling like a confident experienced performer who can do anything