I didn't live two lives just to become a sidekick, thought ELio after Reincarnating to a world that's reminiscent of Film-Noir and Mafia Flicks, where He Gets Asked by the World's Finest Detective to become her sidekick and Put a stop to Crime once and for all! Jp Titles: Isekai Tantei ~ Sekai saikō no tantei ga watashi o kanojo no aibō ni shitai to omotte imasu! En title: Isekai Tantei ~ the world's finest Detective wants me to be her sidekick!