Jinrui Saikyou no sweetheart Anime Details and Episodes The fourth instalment of the Saikyou Series. Aikawa Jun, Humanity's Strongest Contractor. This time, she's been asked to protect the fortune teller's… Series info Watch free DetailsFormatNovelStatusFinishedSourceOriginalCountryJapan GenresActionAdventurePsychologicalRomance RelatedJinrui Saikyou no Tokimeki (Prequel)Jinrui Saikyou no Venice (Sequel) CharactersJun AikawaYayoi Sashirono (Supporting)Kouta Ishimaru (Supporting)Genki Himena (Supporting)Jishin Tokinomiya (Supporting)