Businessman Love Battle

One night, while walking out of a hotel with another man, Keisuke Ibuki is spotted by his ever-so-uptight colleague, Masatsugu Taga. Keisuke attempts to make Masatsugu his partner in crime by sleeping with him, but Masatsugu ends up proposing to him right after they do the deed...!
This is the story of a battle between a straight-laced, purehearted office worker and his boss who's experienced in bed but inexperienced in love!

(Source: Renta!)

Note: Includes one extra chapter.