As for sizing, there are at least three factors with each season:
1. The size is based on Daiki. He is the medium, every season. So if his weight shifts, which it does once in a while, you'll get different fits.
2. They pre-wash almost everything prior to getting it to shops. This causes all sorts of for fluctautions based on the fabrics of each piece. This, different fits between the same designs in different fabrics.
3. They do also adjust based on demand. Note that the...