At Kazuo's comment of wanting to carry Kiyoko to the nurse's office, Jeong stood up suddenly and put his hands down on the table.
Hey! She doesn't need your pruney hands all over her, sharkboy! Don't think you can be all sneaky like that! Kiyoko-chan is a strong, independent young woman, and if she says she's fine, she's fine!
Jeong was visibly angry and talking in a tone that seemed much too angry for such a small thing. Why would he be reacting in such an over-the-top way over someone obviously just trying to help?