Soutai Sekai (The Relative Worlds)
"Beyond my world of despair, there is hope."
The story is set in the year 2020 in Japan. Shin Hazama encountered his other “self," who walks a different life from another Japan. The everyday life which they thought would be perpetual, altered, as their life crackle away. What will the boys and girls desire and choose? A fight against another self in another world begins.
[Source: MyAnimeList News]