Naruto (HashiMada): My Best Friend Turns into a Girl Every Day

This is a lively comedy disguised as a serious drama. Uchiha Madara, the eldest son of the Uchiha clan leader (after Uchiha En's death), the future leader of the Uchiha clan, male. Senju Hashirama, the eldest son of the Senju clan leader, the future leader of the Senju clan, male. The eldest sons of two rival clan leaders meet, but unfortunately, after they meet, they switch genders every day. And so the Uchiha and Senju clans go into a frenzy. "Lord Madara, why have you turned into a girl again?" asks an Uchiha clan member. "Though Lord Madara might get angry if I say this, he really does suit being a girl surprisingly well." "Lord Hashirama, why have you turned into a girl?" asks a Senju clan member. "Though Lord Hashirama looks beautiful in women's clothes, isn't he much too tall for that? (Senju Hashirama, female, 179 cm.)" Uchiha Tajima: Madara, you went to see that little brat from the Senju clan again, didn't you? Inner thoughts: Why does my son turn into the opposite sex every time he sees that little brat from the Senju clan? Could it be a plot by the Senju clan? Senju Butsuma: Hashirama, the Uchiha tricked you into going out again. Inner thoughts: Why does my son always want to see the Uchiha? Doesn't he know that every time he comes back, I want to beat him? But when I see he's turned into my daughter, I can't bring myself to lay a hand on him. (A look at the difference between how the Senju and Uchiha raise their children.) Senju Tobirama / Uchiha Izuna: ...This is absolutely delightful. Pairing: Hashirama/Madara, possibly reversed; Tobirama/Izuna. P.S. 1. The characters may be out of character. 2. There may be pregnancy and childbirth. 3. Most of the plot is the author's own invention and won't follow the anime or manga completely. It's been so long that this silly author doesn't remember the anime's plot anymore. 4. The silly author is a student, so updates are irregular. Theme: