7-ELEVEN's "Mugitoro-don" (rice bowl with barley and kelp in a combined broth of bonito and kelp) has 7.6g of dietary fiber and 390kcal!
I actually purchased and tried the "Barley and Tororo Bowl with Combined Dashi of Bonito and Kelp" sold by 7-ELEVEN. It is a product to be enjoyed over rice with barley, yam, and dashi (Japanese soup stock).