To give some context, there was an event like a week ago that starred Agnes Tachyon that allowed players to increase the inheritance factors of their Umamusumes (so they'd be better parents for training runs). This was, as far as I'm aware, the first time players got to increase inheritance stats, so it was quite desired, but there was only like 3 upgrades available.
So I guess players are banging on Tachyon's door trying to get more lmao.