Kuina and Tashigi: The Troublesome Twins

Kuina and Tashigi are twins that couldn't be more different. However being reunited again should be brilliant or is it? Tashigi soon finds out that being a loving sister is a lot harder than she first thought. And being an identical twin can attract all sorts of problems. Kuina's best friend Zoro starts get a bit too protective, but of which twin and why?