The Matter clan had a dimension named Kuro to Shiro aka black and white with the skies is white and the clouds is black and ground,water and even people white and black. The one who created this dimension is the one who was born ying-yang named Kuro matter, Kuro Matter was the leader of the Matter Clan until he died at the age of 300, so he got reincarnated with his wife, siblings and friends to try find the yin part of myself. so what adventure may awaits the five lost souls they may face danger or find they friends.