Black and White Permanency is a Manga/Manhwa/Manhua in english language, Drama Sad Supernatural series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Legend says that when one’s time is up, only when all traces of love from your previous life must be erased, led by the deities of the Impermanence of Black and White , will you be reborn. And yet a breathtaking, extraordinary love that makes you lose your mind could never be so easily forgotten. When love undergoes the test of time, is what remains the same, pure love, or will that love be battered and bruised, unrecognizable?