Flowers love Kotori too much

Kotori Yamada is a sunny but plain high school girl, who is friends with Tsubaki, her childhood friend who is as pretty as a red rose, and Akiomi, the handsome prince of the school. Alongside her gorgeous friends, Kotori always gets overshadowed and overlooked. One day, Kotori comes across another girl confessing to Akiomi, who rejects her by saying that he already someone he likes. Kotori assumes that it must be Tsubaki, but in fact, Akiomi has feelings for Kotori…

(Source: Natalie, translated)