Board Thread:Fun and Games/@comment-31078435-20170922172547/@comment-32192622-20171010052538

"...seriously? Not the time, Kaito-kun."

(Alright, I think I need to explain the difference between "-kun" and "-san" in this context. Often, -kun is used to address underclassmen (-kohai is pretty outdated). By using -kun, Heather is basically calling him beneath her. She doesn't mean it in a stuck-up way, of course, she just detests him.)