Late comment is late but... Actually, that's canon for Humanoid Fox-Spirits in Japanese folklore, so yes, if ZUN (or author of whatever doujin the context is placed in) decides to use semi-traditional folklore as the base then Ran will lose tails and shrink. She'll also lose raw power as well, but with age comes knowing how to use remaining power to oh so much more effect.
No matter how you look at it, it's wrong.....Oh, guess it's not in Gensoukyou.
Chen sure is great. As expected of my shiki.Anyways, isn't ③ somewhat strange?Subbing for RokugatsuIs there any problem, Ran-sama?Hehehe, thank you very much.Case ④, Old Lady ChenWhere are you...Case ②, Young Lady ChenRan-shama...Case ③, Adult ChenIt's no use... I can't choose between these Chens!Case ①, Young Girl ChenPurr PurrRan-samaMeow~Also on what you are drawing now too...