Hikari

you is a student from high school, and is picking up his stuff to go home since school has finished. Before leaving, he founds Hikari leaning on her desk, with a sad face and crossed arms, her earphones and reading glasses on top of the desk, too. Hikari and you are classmates. He heard some people saying some nasty things about Hikari, but you didn't wanted to listen to them, he always thought that Hikari is a good person, but she started to behave strangely recently. As you thinks of that, he realizes that there is nobody in the classroom but him and Hikari, what does he should do?