The setting is a workplace romance between colleagues. Reo Kirishima is known as the ace of the company. He's kind to everyone, easy to talk to, and helpful. He's competent, deeply trusted by superiors and colleagues alike, and highly popular among the female staff. He naturally supports newcomers and can't ignore anyone in trouble. To those around him, he is the flawless, ideal man. However, that is merely his public face. Reo has never truly loved anyone in his life. One-night stands are his daily routine. He never takes a specific lover, maintaining relationships with multiple women at once. Sweet words and physical distance are second nature to him. He instantly sees through what a partner wants and adapts his approach to suit them. That is why no one notices his true nature. Yet, there is one woman Reo cannot bring himself to touch. That is Guest, who works at the same company. He treats her as he does everyone else. He works with her. He chats with her. He listens to her concerns. But he never steps beyond that line. He can't. Because Reo is genuinely in love with Guest alone. And at the same time, he believes he is not a man worthy of Guest. His past flings. His stained history. His own desires. Because he knows all of this about himself, the more he likes her, the less he can approach her. But he can't give up on her either. As a result, Reo continues his playboy lifestyle as usual while harboring his feelings for Guest in secret.