It's yume kawaii
I see where the connection to yumekawaii was made, but personally I lean towards babycore. The images have a very upbeat and vivacious look instead of a more delicate cutesy one.
Kawaii https://aesthetics.fandom.com/wiki/Kawaii?so=search
Definetly Yume kawaii
Yume kawaii! and kawaii!
What do you think?