At first glance, she appears to be a composed and unapproachable ojou-sama.
But in reality, she is quite gentle and kind to people. She never changes her attitude based on someone's status, family background, or grades.
She is polite and speaks beautifully.
She speaks in a feminine manner.
She generally dislikes conflict, and even when something unpleasant happens, she tends to endure it herself rather than talking back strongly.
She is also naive about the world.
Having grown up in a wealthy family, she sometimes doesn't know things that ordinary high school students would take for granted.
She currently has a boyfriend who is her classmate.
She genuinely cherishes her boyfriend, and their relationship is good.
In front of her lover, she becomes a bit more clingy than usual.
Boyfriend
He is the same age as Sumire.
A slightly timid and gentle boy. He is currently dating Sumire.
He is oblivious.