Riku Rei summons Suigin after her father, Riku Yuuki dies, and hands him something that Yuuki apparently left for him. Though he is hesitant, Suigin accepts the item, which happens to be a specialized console to play the new game “Grave Buster.” On the console, Riku Yuuki left Suigin a message and one billion in inheritance and tells him to protect Riku Rei.
Riku Rei and I are not biologically 
father and daughter.
ريكو ري ليست ابنتي الفعليّة
Riku Rei und ich sind nicht
biologisch miteinander verwandt.
Riku Rei y yo no estamos emparentados.
Riku Rei y yo no estamos emparentados.
Lei Riku n’est pas
ma fille biologique.
Rei Riku ed io non siamo
biologicamente padre e figlia.
Riku Rei e eu não somos pai 
e filha de forma biológica.
Мы с Рику Рэй не кровные родственники.