Wakana and Yuina definitely kissed
Maybe even went farther than Ayaka and Sora by now tbh
Just how ? Like, am i really the only one wondering how and when it happen ? You have just a "I could be the one one who make you happy" line after the childhood friend mini arc and that's all, no more hints after that and all of sudden they're going out and all without any warning ? As much as i don't have a problem with them going out, it's seem rather strange to be that all of it happen behind the scenes.