I honestly think that Jirou and Sakurazaka should get together leading to Akari reevaluating her behavior around him and how she treated him. I think right now she's acting too bipolar and can't properly articulate how she feels, and that will be her undoings.
I think it will lead to a point where the two have to go their separate ways and they'll have to reevaluate what they lost and what they thought they wanted vs what they actually wanted, and Akari is going to have to run back to Jirou and apologize and tell him how she really feels.
That will probably be the most satisfying way to end their arc.