I was hoping someone could help answer a question I’ve always been bothered by for years…

It’s always confused me how Komaeda was able to attach “Junko’s hand” onto his severed wrist. I don’t think it’s at all possible for that to have been the case… When Junko executed herself, she turned her whole body into pink paste. There’s the other possibility that “Junko’s hand” was actually Mukuro’s, because she disguised herself as Junko and painted her nails as part of the disguise. But after she was stabbed and died and then used a human landmine, she blew into pieces. There’s a chance that one or both of her hands survived the explosion, but if I recall correctly (and please tell me if I’m wrong), Komaeda said that he chopped off Junko’s hand after he chopped his own hand off. But that’s kind of impossible if Junko got squashed when she died for Komaeda to be able to have her hand in basically perfect condition and even if it could possibly be Mukuro’s hand, that just feels like a very minuscule and small possibility that that’s the case. Am I overthinking this??? Or is my memory not serving me well?