Chorokawa Ouji no Nise Koibito Sakusen

Hayasaka, talented and handsome but with a haughty attitude, is known as the "Prince" of the company. However, despite his looks and skills, he has never beaten his even more perfect work rival, Shindo, ever since joining the company. To his surprise, Shindo makes an unexpectedly serious confession of his feelings for him. "I'll break up with him at the peak of our relationship, make him feel down, and take the top sales spot for myself." Seeing it as a chance to overcome his rival, Hayasaka, though feeling a slight pang of guilt, agrees to start a relationship with Shindo. Being inexperienced in love, Hayasaka never anticipated what would come next… A serious relationship means dates, kisses, and maybe even more—!? (Source: Brite Shuppan, translated) Note: Includes one extra chapter.