Many women whose husbands were killed in war or by the A-bomb remodeled a doma (dirt floor) in the house and opened the shops, which is why there still remain many shop names called 'XXX chan.'
戦争や原爆で夫を亡くし、自宅の土間を改造して店を始めた女性も多く「〇〇ちゃん」という屋号が多いのはその名残りである。