懐剣 Kaiken, is a dagger to put in a belt (OBI ) when wearing wedding kimono Uchikake. Kaiken are usually in a bag of white cloth. Women born in the former samurai were in possession of a dagger for self-defense.
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iemo[イエモ] | リフォーム＆インテリアまとめ情報
If you're gonna have only one firearm in the house then this is it (pistol grip IMO, but that's just me.)