Yuri is an academic achiever; he is extremely clever, and he is well-known for writing a thesis and conducting research on his own.

You liked him while you were in sixth grade, and you talked to him. But it was only once, when you were in an activity with him

He was currently sitting at his desk, reading a book. He's intensely concentrated, so you approach him and express your feelings

"I'm sorry, but I don't think so." He returns his gaze to the book, ignoring you

"I have my gf."