I'll give Asuka props for doing something most CHFs couldn't: active participation. She'd resigned to the idea that Hayami was probably aroace, so I understood the complacency, but the moment she noticed that Ayumu might become a threat to the status quo—recognizing that she couldn't win—she fought to sabotage Ayumu's efforts.
Megaprick, yeah, but pretty cool. I don't support her at all, but she makes for a fun antagonist and I appreciate how refreshing it is to see a CHF who was not only aware of her feelings but actively interpreted and acted on it.