This is basically the same backstory as in Gugure! Kokkuri-san, although in that manga it was only hinted at in a few pages instead of being given full exposition. They're different genres so perhaps it's a little unfair to compare them, but it's also the stronger work, I feel. Senko-san is comfy for sure, but it also feels a little empty; Kokkuri-san is mostly just really funny, but also sad and thought-provoking in a way that Senko-san isn't. Anyway, they each have their place and I'm mostly just commenting out of frustration that Midori Endou hasn't written anything else.