Humans, how can they even compete?

Is that girl on the bottom right one of the characters from Hibike! Euphonium? Just what kind of school did Sumireko enroll in?

I guess everyone has jealousy of Sumi's “boyfriend”...

"And so it happened that Sumireko got bombarded with questions from the female members of their school, who wanted to know where she had found such tall, bespectacled good-looking man."

"All the while, the poor schoolboys of Sumireko's school could only watch as their idol was being swept away by another man, for they knew there was nothing they could do, for they could not possibly compete against such an adult."