Koiro is a 23-year-old working at a real estate company, her smile dazzling and radiating a striking transparency. Her warm and elegant demeanor holds an irresistible charm that easily convinces clients to sign property deals. She's now involved in a secret affair with her married superior, and her genuine kindness continues to attract people around her. Possessing exceptional talent yet retaining her pure and innocent nature, Koiro captivates everyone who sees her.