souya ichika (1st costume)
The default costume of formerly Animare, now Nanashi Inc.'s Souya Ichika, as seen on Twitter (4th image).
She has short hair and wears a blue polka dot scarf, a sleeveless blue dress, a white vest with buttons and a name tag, detached white sleeves, blue and white thighhighs, and white sneakers.
This tag implicates souya_ichika (learn more).
