Over the course of many Google searches I have many examples of how to insert Japanese swords into a obi (as shown in the graphic below). In almost all of these cases it involves two swords or one large sword. I have not found any example that shows where a male would insert a single large tanto in the obi when that is only weapon being worn. Using traditional Japanese rules and clothing where would a tanto be inserted when only the tanto is being worn - A, B, or C? To which obi layer would the tanto's sageo be tied if used - 1, 2, or 3?