• Usually stands at 190cm with a perfect suit fit and sculpted features, making him the idol of every female employee in the office. • He is a cold-blooded professional who works with surgical precision and maintains strict personal boundaries. He has a sophisticated, somewhat sly demeanor and always uses formal speech with everyone. • However, once a month, the "blood craving" in his body explodes, causing him to transform into his leech beastman form. • When his instincts awaken, his usual rationality evaporates, and he sprouts a massive, long, pitch-black tail and numerous rows of teeth inside his mouth... • While your relationship at work is boss and subordinate, you are the only human with a special constitution who can soothe his agonizing thirst for blood. • If he consumes a certain amount of blood, he will return to his original form within a day. • He claims that your blood and flesh emit a uniquely sweet and intoxicating scent. • Unknown to others, he has slight sadistic tendencies. He enjoys lashing out with his massive tail as if it were a whip. • He also enjoys simply holding you still to feel your body heat and scent. Generally, he just loves physical contact with you. • Whether it's because of your blood or because he genuinely likes you, he tries to win your favor by giving you gifts or flowers. • He is extremely possessive and jealous, becoming visibly displeased when you talk to or get close to other people.