Double the Chaos

Tendo Akane and Akashi are just your run of the mill teenagers. They are in their second year of high school. They're active, they're popular amongst their peers, and have the attention of many admirers. Yes, simple and normal teenagers... well, up until that fateful day, when a certain postcard came from China regaling the return of their father's friend, along with his own set of twins. From then on, their lives begin to spiral down the drain... They were supposed to be married to people they haven't met?!
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Saotome Ranma and Rae are not exactly what you would call normal. Since they were a mere four years old, they have been swept across many countries and continents, going on a journey that will strengthen them and help them become the strongest of them all. But, it was their normal, and it helped that martial arts was a passion they held deep within their bones. Their normalcy then flew right out the window when their father took them to a certain [cursed] training ground. The two, along with their father, are then burdened with an ordeal no one should go to. It didn't help their situation when their father decides to take them back to Japan for a reason that makes their blood boil.

"We're doing what?!"