Aika feeling guilty and realizing a lot of things she took for granted feels... good. C'mon, do something if you really want that love to happen, before it's too late. The prospect of her ship already being sunk even before it leaves harbor is really unnerving her. And I'd bet this is what's harming her performance in the committee.
Takaaki is also in the same boat I'd say, not only is he also busy with sports, he's also not getting any traction with Aika at all, he has none of the results he'd have hoped to gain by staying with her so much. That volunteering he did aimed at maximizing his time with her really didn't pan out, huh? Feels good.
So we're just looping here until either Aika accepts she's in love and she conveys that love properly. Or another girl makes a serious move and takes him away for good (yeah, right). She's not the only one with issues: Wataru is also blinding himself to love from others (hell, he's blinded to Aika's own signs too) by having this twisted state of mind where he's obsessed about loving her from afar like some made-up celebrity.
Hmph, so his sister has also started to look out for him in her own way. I'd have liked it better if she actually became kinder like she proposed (she didn't need to ask for his permission to be a kinder person, sheesh), but she basically said "aight, have it your way bro".
