Iihidonkatsu is a tonkatsu restaurant in Hirao, Fukuoka, serving rosu katsu and hire katsu. The thick loin and juicy tenderloin come with sauce, mustard, and salt. Rice and cabbage can each be refilled once, and draft beer is available. Arriving 15 to 20 minutes before opening has meant waiting an hour, and a wait formed within 15 minutes even at 4 p.m.