(I don't own this picture. All Rights go to the owners.)

Name: Violet

Age: Same age as Giyu

Gender: Female

Species: Human

Personality: Kind, brave, smart, caring, serious, helpful, protective, strong, creative sometimes, beautiful, silent sometimes, cranky sometimes

Appearance: Long blue hair in long twin braids and hazel color eyes.

Wears: Her Demon Slayer Uniform looks like Kanae Kocho's Uniform but the uniform color is navy-blue and also wears a light purple cloak, an orange star pendant and a light blue butterfly hair clip.

Family: Unnamed parents (Deceased), Yukiko (Younger Sister), Eric (Younger Brother)

Friends: Demon Slayer Allies

Enemies: Demon Slayer Enemies

Crush: Giyu Tomioka

Breathing Style: Water Breathing

Others: Her fighting weapon is a light blue katana.

Sounds like Rise Kujikawa from Persona 4