I have been speedrunning this game just for fun (because I can't get enough of the tasty art and atmosphere!)
I've gotten Hard Non-Milky down to 11:19 (according to the ending screen timer). Once I have some more runs under my belt and have a route I'm happy with I'll probably post my PB somewhere. I know speedrun.com doesn't like doing boards for lewd games so I may just post it at r/breastexpansion or something.
Anyway, while I've had some big breakthroughs in terms of making the run much faster, the "Seed" feature really jumps out to me as a chance to optimize WAY further. In theory, I could play a ton and record how good each seed is, then grind out a PB for the best seed I can find.
There's just one problem... I don't think it works. No matter what I do, the game always starts randomly. Not even the first customer order on the same seed is consistent. I tried seeing if it was a timing thing, trying to get really consistent timing on starting the run after entering the seed, etc and I could never get anything consistent. When I pause it displays the seed I entered, so it's not like the value is getting dropped.
It just seems like the "seed" value doesn't actually change anything. Everything's random anyway.
If that's just how things are, then so be it! But if there's a way to manipulate that seed, I wanna know it!
Thanks~