Mangaka, you're not fooling me into thinking Kiyoka is a credible romantic rival with this chapter. It's going to take more than this to convince me she now has a semblance of romantic interest in Shunsuke. I'm still waiting on a chapter that develops her, or tells the story from her POV. She's barely a "main character" at this point.
Heck, many readers still can't even get her name right, if they're not just simply using her family name Koiwai instead. They hate her so much they call her "Hiyoka", "Kyouka", "Kyoka", "Kowai"...