I'm going to go right ahead and say: "only in Japan" for this one.
"Newly wed to Shunsuke, eldest son of the historied Tsubakikoji family, Reiko suffers the loss of her husband the very next day. Under the cruel and unceasing mockery of the aristocrats, Reiko's common-born blood sets to boil. Clutching the rose Shunsuke gave her to her bosom, Reiko issues a defiant challenge to the house. "I am the widow of the eldest son of the Tsubakikoji family. This house is mine!" ...This is the elegant art of feminine conflict. "
Imagine a world where slapping is the most advanced form of physical conflict there is. No weapons exist, and punches and kicks are unheard of. Imagine, great battles in history waged by armies that charged at each other and slapped each other into submission: Thermopylae, Hastings, Agincourt, Waterloo, Normandy... Imagine if the super weapons of the Cold War were actually genetically enhanced cyborgs with giant hands and massively overdeveloped arms in cryogenic stasis on top of ballistic missiles...
Get slap happy here