Bluehope

Wow this game has a bunch of bad ends compare to School Days and Summer Days. Thanks for your walkthrough. Sekai has no route in this game, I hate her.

Like I said adult heroine is niche in eroge games beside nukige games and you just want English games so you wil have very few options. I recommend you wait for Grisaia 2 and 3 to be translated, it has 3 adult routes even your blood related mother.

Oh I forgot you only want English games, then give this game a try it has decent and funny plot and fully English patch https://vndb.org/v2748

I am an older heroine lover, very few eroge games have older heroine beside nukige. I highly recommend Neo + second sister. That game has 2 milf and you will really enjoy these routes. https://vndb.org/v12606 oh and another eroge Walkure Romance more and tell version has your cousin route and Celia senpai route, the game also has really nice art style https://vndb.org/v10983 https://vndb.org/v15105 same company as Koi resort they have Koibito and Chikage'route https://vndb.org/v10972/chars#chars if you have learned Japanese you would have a bunch of choices, some nukige games has decent plot and I will recommend more, crescendo has old style art and you may be not like that game but it has English version.