A meme in the Hololive EN fandom, during Gawr Gura's debut stream she was so nervous that all she could say was 'a'
"...a"
A nickname given to Hirai Momo.
Hirai Momo is a member of South Korean-based girl group called Twice.
An important tool used in taxonomy, to classify living organisms.
"The dichotomous key can classify many things"