Of course it's an aquarium date. It's not fair there wasn't a close up to Koko's butt at the end when Minori admitted why she was holding her. I hope her training goes well, for Koko's sake. You know you have to change when even Koko calls you a pervert.
Koko was genuinely super cute for the date, she genuinely was on the offensive this time and those rings were the best part, looking forward to seeing Minori wearing it forever.
I would totally buy the filled up marriage form of them if the author sells it.