These are swim trunks from Itoman Swimming School. They were only used during competitions. The name and school name were written on the quality label under the Mizuno tag, so it will be provided with those areas blacked out. Overall, there are no noticeable stains, but upon close inspection, there are 3-4 small, spot-like oil stains (likely from food) in a few places. See image 5. I would like to offer these to someone who understands the above points.