This was something I was wondering how common it is. kids to adults is one thing but I feel like baby transformations aren't as common, which I always find are some of the more fun transformations both AP and AR wise. I figured this could be a thread to point out if anyone has favorite or interesting baby transformations, whether it be baby to adult or adult to baby.
Some of my favorites being in Nana Seven of Seven episode 26 where Hitomi goes from being a baby (though we never see how or why she is a baby) to being in her mid 20s. I still standby this is one of the best AP's I've ever seen with some fantastic process, and pretty funny dialogue.
https://youtu.be/Oc4Ed-tcJ44?list=PL...buVAXdp&t=1231
I also really like the group AR in Classicaloid where the protagonists along with other background characters are ARed into babies with some good process. Though the one drawback to me is that they didn't really show enough of the group AR and only really focused on the main cast and one small group of characters with the female lead.
https://youtu.be/cj1jdi_Scjs?t=30