Shoujo Kakumei Keikaku

The girls will start a revolution. The world has been divided in two by an unknown event, transformed from its original form into something completely different. "Reclaim your other self." Huddled together in a dazzling corner of the city, the girls' existences are split in half without even realizing it In an effort to rediscover their true selves, they travel to various worlds, discovering mysterious phenomena linked to the rumours of people known as "urban legends" (Source: Official Website, translated)