Inexpressive Kashiwada and Expressive Oota

Meet Kashiwada-san, a female middle-school student, who remains emotionless regardless of how she is meddled with.
And Oota-kun, unable to control his facial expressions, is the complete opposite of Kashiwada-san--but he keeps messing with her, against his better judgment?!

Though both of them are the exact opposite, will a mutual love eventually develop between them...?

Note: Total chapter count includes 10 extra chapters.