This world is connected with another world. In this other world, there's another you. This other you is called 'another self'. The other you always carried your burden from the real life. This is a story about some people, along with their other self. This is a story about their life... Elsword x Aisha, Rena x Raven, Eve x Chung! Void x Infinity, Night x Veteran, Nemesis x Chaser!