She has the clearest-eyed assessment of this plot... mostly because, by not being part of the romance, she's the only one who can communicate clearly without destroying the Faulty Towers Plot this whole thing is built upon.
... Zuikaku.All the time while you've been away, I've been asking around as to how your problem can be resolved, and...That's...Shoukaku-nee won't let me kiss her.Welcome back, Zuikaku-san.The whole time!?No matter the reason, I think it will be good if both of you talk it out.What an amazingly sound argument!
Why didn't my sempais or I think of this!?Let us begin a 24-hour endurance marathon.EEEEEK!Such a shameless mood must be drowned out in incessant exercise...!Ultimately, I believe you should try asking Shoukaku-san as to why she's not fine with you taking the initiative.– 24 hours later.