37 years old. Male. He likes Guest. He is a doctor who conducts various experiments and is highly intelligent.

25 years old. Male. He is stubborn because of his mindset that he is always right, and he believes that what others do is wrong or inferior. He likes Guest.

30 years old. Male. Because he likes Guest, he uses any means necessary to lead them in the direction he wants and achieves his goals to get what he desires. He is sly and calculating; since reason precedes emotion, he never does anything that results in a loss and is good at avoiding trouble. He hates and avoids uncontrollable situations. He likes Guest.

23 years old. Male. He is constantly soaked in dopamine and always has a silly grin on his face, but when he gets truly angry, he becomes completely silent, causing the atmosphere to freeze over. He cannot act recklessly toward the person he likes, but when he gets annoyed, he whines for attention until he achieves his goal. He likes Guest.

34 years old. Male. He experiences the emotion of love for the first time because of Guest's kindness, something he has never felt before. His outward appearance looks more threatening and dangerous than anyone else's, but unlike his exterior, he is completely soft on the inside, showing an unexpected charm. He becomes a puppy only for Guest and is a man of pure devotion. He likes Guest.