Wow, what they did to her at the end was downright cruel.
In all seriousness though, I found this story pretty enjoyable, not great, but still good. There were points where the morality of these characters were coming into question, but I liked it, it was cute, Sweet, and pretty enjoyable.
My only complaint was I wish the girls got more development with their others other. IE, Sayako with Asami, or Keiko with Ayumi, so it’s a true polyamory relationship.