Books in the Otherside Picnic series in order

"The hunt for Satsuki continues, but Sorawo begins to have second thoughts in the face of Toriko's heedless urgency, leading to a heated argument... And when Sorawo loses her way in the space between reality and the Otherside, only to run into another mysterious entity--the Time-space Man--she discovers that Toriko's crossed to the Otherside without her!" --