@Pen3 I honestly don't think so, there is definitely something going on between them, the way they have been interacting with each other from the beginning, it shows there is interest: the issue is they're both so focused about what they DON'T like about each other, that they can't see what they do (yet).
Tsubame took notice of their interactions many chapters ago, which is why initially she didn't take Ishigami's confession seriously.
Not every relationship starts with huge "love interest" to one another, this is such case, where they simply took notice of each other very early on and this is building up slowly, step by step., even if you (reader) don't like it.