(Ignore it) Kinda measy rambling
If there's a certain type of headcannon or speculation that i will legit struggling with, it will be age Headcannons/speculation. Even if i don't really give specific age HCs or speculation and make it a age group HCs or speculation, i still feel like i will struggle about if the media in question don't have a clear timeline or basically non existent timeline from the beginning.
With whiteout survival :
The timeline and continuity (i think) do not exist in this game, i feel like the more characters added to the game i feel the more jumbled the chronology of the events are. Some character's story kinda implies some time progress or significant age difference (i have some weird personal speculation that some of the playable child characters in that game is story wise shouldn't have been a kid anymore).
With Umamusume :
All of the umas are "supposedly high schoolers" But the class division is kinda jumbled with Teio supposedly more older than the 2010s umas but still depicted to be younglike, characters like rudolf or maruzensky (Maru is speculated to be atleast 18) haven't graduated after all those years. Thought it is heavily speculated that everyone basically are in forever school situation and someone speculate that they're also have university or collage that could fit for anyone 18 or above.
For Cygames, many of umamusume media kinda exist in their own continuity or have very loose one and some one once said that many umas are cramped together so that umas could inspiring eachother for characters from different years in one area.
For Century games, i just feel they don't care enough for it.
