Falling in love with a clueless boy would turn any girl into a cactus!

Miku Yamada has a longtime crush on classmate Kyohei Fujioka. But no matter how many times she tries to show him how she feels, clueless Kyohei just doesn't get it. Frustrated, Miku gives up on him, only to have him start calling her "Cactus" for being prickly when he's around. Will Kyohei ever figure out Cactus's secret?

Miku confessed her love to Kyohei and was rejected. Despite that, the two have gotten closer lately. But now the mysterious Kudou arrives on the scene! He entices Miku to go on a date with him by promising to tell her "Kyohei's secret"...