Imagine Onii-chan comes back and instead of having a wife and kids or something, he's become emotionally and sexually repressed to cope with what he did.
Seeing his Imouto could stir some things up.
I was just thinking about Stardust Telepath the other day, wondering if the translations would ever pick up again; I've been kinda missing it.
Thanks for the translation mycropen.
I feel like you can treat the first 10 chapters as it's own self-contained story, ending when Pieta ends the time loop and find the story enjoyable.
Sort of like how people view Westworld; enjoy season 1, pass on the rest.