Prologue; 13 Years Ago

Adam Raiden... People get confused on who this person is.

"Is that Mei's brother?" or "Is that Mei's sibling?"

No, Adam Raiden was born under a whole different family with "Raiden" as the last name. These Raiden's were protectors of that Kaslana family for over a thousand years. But due to unknown circumstances, a disastrous incident happened, leading to Adam being the last of his bloodline.