Otona-Najimi

Twenty-four-year-old bento shop employee Kaede Kagaya has been friends with her next door neighbor, Haru Aoyama, ever since they were kids.
Kaede’s had a crush on him for forever, but Haru never seemed to notice her. But even if he’s romantically clueless, he always comes to her rescue like a knight in shining armor.
What will happen when a soft and sweet-looking girl starts flirting with Haru? Things get even more complicated when Iori, another friend from their childhood, steps into the fray. After all these years, will Kaede’s love life finally begin . . . ?!

(Source: MANGA MILLION)