零、
https://images.plurk.com/2e2QtsivrG8jJ8VbGYwkXb.png https://images.plurk.com/1wWGY8CezL5wHtPA8mu85O.png
https://images.plurk.com/32yTYzeHtjG0azMyTgB7MZ.gif https://images.plurk.com/3JJDg8kcjEuMoq1319lHIN.png
第一次換軸