Missing Something

This is the story about what happened 5 years ago with Karma Akabane and Okuda Manami.
2 years later after korosensei's death something between karma and manami happened.
Karma tried to erase that very thought,and so did okuda.
Eventually he discovers what okuda was experiencing.
Pls. critic my grammar thanks.
I'm still 13 though
I hope you like it.