I am going to give this story a try. It seems quite innocent and not too heavy on the mind even if its plot is based around students from a prestigious high-school with a very special rule: no-dating (on campus), where the main character, after just joining the school, is dutied to catch students who are dating. She will be caught between two fires, not knowing what to exactly do.
The official story (교내 연애 금지) can be found on m.series.naver.com.
what a stupid rule. students r humans, not fckin robots. anws i got worried that the older bro whom mc saw will approach her and use her feelings (since shes easy to fall) so she wont tell on them but im glad thats not what happened. he asked mcs help to clear a misunderstanding bet. him and his younger bro jaeyoung wc is mcs childhood friend. but since older bro is soft spoken and gentle, our mcs heart started to flutter for him NOOOOO. the ml btw is the younger bro, jaeyoung. the one who teased mc when she picked up the spoon. im only basing it from the looks of the guy in the cover and he resemble the childhood friend a lot. also when mc asked him where his older brother is, aside from looking uncomfortable i think he doesnt like that mc wants to talk to his older bro. she also mentioned that he knows more or less that mc falls inlove easily so hes probs worried that mc will develop sum special feelings if she meets the older bro... and boi hes right