Nuku Nuku Goes Across Time! Proposal at the Bon Dance!.A human experimentation subjected with the purpose of having Esper powers & getting used for named Yuko, escapes Mishima Industries with the intention of seeing a clear blue sky during a rainy day and gets found by Nuku nuku. At the house Ryonusuke's father quickly identifies her and after, accomplishing the much-attempted Mishima server hacking, sadly, concludes that Yuko has less than 12 hours to live. When Ryonusuke hears about this he doesn't believe it and refuses to let her go until her wish gets fulfilled. But Yuko goes with them nonetheless, after wiping Ryonusuke's memories about her. Her fate would also remain unresolved till the end of the series.