The Office Cougar

Yukichi Jimii is hopelessly in love with Shizujiro Harari, his boss who hates him. Every time the quiet and dull Yukichi makes a move on Shizujiro, Shizujiro calls him incompetent and tells him he loathes him. One day after returning from an apartment inspection, Yukichi comes across a secretly - taken photo of Shizujiro in a very compromising position. Yukichi sees this as his chance to make Shizujiro his and confronts him...

(Source: Renta!)

Notes: Includes one extra chapter.