Rikyu is said to have created nijiriguchi inspired by seeing how a fisherman entered a boathouse on the riverfront at the Yodo-gawa River in Kawachi Hirakata.
にじり口は、千利休が河内枚方の淀川河畔で漁夫が船小屋に入る様子を見てヒントを得た、とされる。