A story about Rin, a university student who's in his third years studying abroad suddenly got transmigrated into a whole new unknown world where everyone he ever knew was there without a single recollection of their 'past' memories after getting hit by a truck just before he gets to celebrate his anniversary with his current girlfriend while crossing the road. His only companion that has memories of the 'past' was his best friend, Usagi who has stuck with him ever since their diapers days and died together at the same tragedy. They're facing challenges ahead together in hope to return to their 'original' world and make new friends or meet their loved ones along their adventures. However, this adventure they walked was a very twisted one and was it supposed to END LIKE THIS?!! ° ° ° ° ° ° ° ° Will they be able to fulfill their wish in returning home or will another season unfold?