Watch Reversi Watch now on Miruro — Free Anime Streaming In the summer of 2016, an unknown alien organism invades Earth and annihilates 20% of the human race in a span of one month. However, survivors of this… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryKorea Fantasy · Sci-Fi Male Protagonist · Survival Polarity (Alternative)