Does Usami think of Naruse as a friend? She doesn't seem to trust him at all. I'd get it if she wanted to tell Yuki about what happened, but she didn't want Yuki to know, and on top of that she told Hakamada, the one who doesn't have any business with the situation to begin with.
I don't get Usami at all. She always seems on Hakamada's side. Even though Naruse is always supports her and helps her with her relationship.
Also, what she does in the next chapter is horrible to Naruse as well.
I hope that she, eventually, realizes that she hasn't been a good friend to Naruse and try to change for the better.