I just watch this youtuber called Twinkle phoenix and she goes and through this game and gets the good ending plus the 9 bad endings
The first episode is called;
IF Siren Call by darkpetal16 Episode 1 Along came a Siren with a side of worried Dadster
And there is a whole playlist of her going through the whole game ( 8 videos btw). Like I said earlier she does the whole story + extra scenes. I gonna say this now but it's a little bit cringe so yeah. Hope this helps.