GAPS: apples and oranges

Naoyuki Hasegawa, 37 years old. Since learning about his subordinate Katagiri's dual personality, he seems like he's about to fall for Katagiri but doesn't! Because he is a sensible man who senses danger. Satoshi Katagiri, 30 years old. He is handsome, intelligent, and has a good personality. He is admired by both men and women as the prince of the company. However, in his private life, he is a sociopathic scoundrel who loves horse racing, lives in a messy room, and tries to seduce Hasegawa whenever he gets the chance. When a new handsome prince, Miura, appears on the scene, their relationship is thrown into chaos, and Hasegawa finally succumbs!? (Source: Taiyoh Tosho, translated) Note: Includes one extra chapter.