Tracen is a time-warping SCP.

And Maruzen being older than Light Hello is now headcanon for me.

NNescio said:

Tracen is a time-warping SCP.

And Maruzen being older than Light Hello is now headcanon for me.

There are things that man aren't meant to know.

There are probably 'generic' Umamusume who may be well accomplished in-universe but age and die like humans while those that are isekaied from RL horses are timeless and ageless outside of re-enacting their other world counterpart's life.