Do Yeon Jin

Ho Woo, a high school graduate with exceptional memory, observation, and a strong sense of justice, becomes the first of his kind to join the top accounting firm in the country. Je Kyun, the firm’s Vice President, and his son Seung Jo, the firm’s ace accountant, work alongside him. Though they have different goals, they all aim for the same target, serving justice within the firm. (Source: MyDramaList)