All rights belong to their respective owners 

Rio Sonogami is a character exclusively to the game Date A Live Twin Edition: Rio Reincarnation and the novel version of the game. After Shido came back from school, he suddenly remembers the events that occurred at the end of Rinne Utopia, where Rinne disappeared into his arms. He suddenly hears a voice who asks him if he wants to see his most cherished person again. After which, he begins to black out, and when he wakes up, it was the next day. Much to his surprise, he finds that both Maria and Rinne are still alive, to which the former explains to them that they are in a dream-like world.