A ninja's pledge ( male Reader X DOA Kasumi)

you the reader are a ninja from the Phantom clan a clan long thought extinct due to their coveted techniques and absurd Growth and you have been Sent by Hayabusa to protect Kasumi due to him being on a mission, but you find yourself wanting to do more than just protect the beautiful ninja princess, you find yourself falling for her but you also must balance romance with combat as your tasked with fighting in the current Dead or Alive tournament and defeating the champion Raidou whom kasumi is out to kill, how will you deal with these powerful fighters, and will you discover who killed your clan.