Not sure, but...ok, just looked it up...so apparently it's originally a VN that was made into an anime series:
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with multiple endings (naturally):
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so now the question is...where to find the VN of this, n y does Sekai help set up Makoto with Kotonoha in the 1st place if he likes her instead n will b jealous of Makoto?
https://f95zone.to/threads/school-days-hq-v1-02-0verflow.18540/
I had forgotten about the VN version, but yeah, it's infamous. The anime version went the really dark route, and a lot of people can see Ashley going that way, or could... It's not really likely any more.