As another ninja, Ibuki can be tricky to catch off guard, but is actually quite accepting of letting herselfbe tied up in a casual fashion. She's another gal whose outfit should determind how she's tied: If she's in her ninja gear, bind her in a fashion to focus on her exposed hips and rub them. If she's wearing something else, let her hair loose and enjoy that after tying her in any effective fashion. She may complain a bit at times, but a heavy gag will ensure that her complaints go unnoticed. Don't drop your guard too much, because she does know how to escape when she needs to.