Could someone help me with the sauce of the story please?

There is some work that I remember recently and my cultured/degenerated mind cannot help but to keep finding it.
It's about a father and a son visiting a shrine which popular for granting permission wishes related to relationship and baby. The father wish for meeting his grandchildren sooner from his somehow unreliable in finding partner son, while the son wish for a beautiful girl.

The father suddenly turned into a girl of his son taste and the story goes on the usual way, upon arriving home the gender bend father try to saying something to his wife but cut by her telling "thank you for visiting my husband grave".

They realize that the reality has been changed resulting the father died in accident few years prior and the father is their cousin that has been living together with them and the son is dating her.

The story conclude in the newly existed cousin okay to see her child/grandchild face and living together with her husband/son.

If anyone know the sauce of this story could you share it with me? It already bugging my mind for a few weeks and multiple attempt to search for it but failed to get a result.

Thank you in advance and thanks for reading until the end.

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