Honestly, I don't even see how Jirou may end up with Shiori. For both Jirou and Akari being close to theirs initial crush is just playing a role, trying to be perfect and well it's quite fake.
When at the same time Jirou x Akari is just natural chemistry and it was pointed out how natural, carrying and synchronized they are over and over again in the manga. Even before the kiss Shiori doesn't believe Jirou facial expression and thinks that he just haven't realize his true feelings yet. I mean for Akari and Jirou every time when one of them is in distressed they bodies just act on they own to go help each other- just what more you can add here.
Also I'm glad that author ended Akari crush with normal and logic talk with Minami. No unnecessary dragging it out or making it go away by some gag or confusion. Too bad that Minami is in love with his brother wife and didn't even had chance to confess, because he waited too long...
Now I hope Akari confession to Jirou won't be stop before she even have chance to say anything, by Jirou asking how progress went with Minami and commenting how on his part it was success or something.