Unless it's just a jokey sort of question mark the only one left alive is the Shithead Reimu parent, and... well, just what the hell was she trying to do, repopulate the park all by herself?
Sure the wasa kept killing the new babies but this chapter alone she had two more kids ready out the oven when she was hung out to dry, and two MORE inside were already developing!
All the random cut scene is how the shitheads had their flashback of what they have done to other yukkuri and compare it to what coming at them. - Shithead father Marisa killing Chen without any remorse because she's strong. She told Chen, if she want to hold grudge she can do it in her death because the strong Marisa don't need to hear what weaklings have to say. Same thing as the kids are doing to her, - Wasa tricked Shell Marisa, saying there's sweet sweet while it's actually a hairy caterpillar, then she said it's the idiot's fault to be fooled. Same thing happened to her after the kids told her to kill her sisters so they will take her as pet, it's her fault to be so stupid. - Wasa insult little Chen's mother because her accessories is damaged and she lost her tail, the same thing as the kids showing her mom who's now ugly.
In short, what this family of lowest shithead do is no different then the childish abyuser.
With-Girlfriend Mohican-san think getting too excited like those kids are just sign of a second-rate abyuser.