One of the main characters of Love Live! Sunshine!!. Dia is a prideful perfectionist, but under that exterior has an encyclopedic knowledge of µ's, and is a bigger fan of theirs -- particularly Ayase Eli -- than the rest of Aqours combined.
She is the student council president of Uranohoshi Girls' Academy, and the older sister of Kurosawa Ruby. Dia is a member of the Aqours sub-unit AZALEA, alongside Kunikida Hanamaru and Matsuura Kanan.
Voiced by Komiya Arisa.