Finally a new chapter! We should now be only a couple months away from her first day at school, so maybe around 2030? I'm sure that Azuma planned to get there as we were introduced to future classmate Mi-chan some 6-7 years ago (alto-cumulus boy is another possibility imo). He started out with six chapters per year, which I think is a good pace. Time to do the job properly, Hakumei and Mikochi is another manga on that schedule. But I guess he has had enough success to decide his own pace, and I don't blame him for that. Give me a new chapter now and then, and I'm happy. Just don't quit!
20 years since the first chapter, so if manga time was real time she would be 25 now. Made me think of the fun theory I read about 10 years ago, that Alpha from YKK is really Yotsuba several centuries in the future. Both have green hair and age very slowly, so why not?