Ordered this using the Burpple Beyond app. It costs $19.90 (but if you would like to change to soba, it’s an additional $1). The portion is not huge (especially the number of pieces of beef) but it’s generally tasty and the beef is tender with a well cooked onsen egg. Would have liked more sauce for the rice as well as it can get a bit dry. Nonetheless with the 1-1, definitely worth trying!