My problem here is author try to explain an illogical story (husband "resurrected" from the dead), with logical reason (husband actually being a twin). It's introduce a lot of plot holes and plot convenience. The fact that her neighbor, and even her mom know all along is frustrating. And author have to explain the twin husbands dumb idea that they've been playing around with her for FOUR YEARS.
I was expecting it has more supernatural aspect to it. That her husband is indeed "resurrected" from dead, or that he's turned into a ghost/spirits. Especially since in the first chapter they were celebrating bon-obori festival.