Bloody Sugar wa Yoru Warau Anime Details and Episodes "Nega"—It is a bizarre disease that develops by acting on the negative emotions of human beings. Symptoms vary from person to person and cannot be seen by… Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Horror · Supernatural Body Horror · Seinen · Medicine · Episodic · Adoption · Found Family · Food · Disability · Foreign · Family Life Black Terror (Related)