For a professional but indifferent detective, evidence is unnecessary. A detective is not a police officer, not a judge, not a lawyer. A detective who is not very eager to become one, due to factors of reluctance and irresistible elements, always encounters some bizarre non-human entities. Such as top criminals and brutal monsters, so naturally, there may also be stunningly beautiful, gentle and lovely, understanding, well-read, and determined female agents who are eager to get close.