There is another theory according to which the origin of katsu-curry was a dish called "Kawakin-don" having been served since the Taisho period by 'Kawakin,' a street stall for tonkatsu in Asakusa, Tokyo.
また同じく東京の浅草にあった屋台のとんかつ屋「河金」で、大正時代より「河金丼」の名で提供されていたものを元祖とする説もある。