Nani o Itte mo Shinjichau Last Boss Maou-sama Manhwa (Uncensored)

A new Hero has emerged! But he has a weakness! He is a real pervert, obsessed with women. Learning this fact, the Orc Minion proposes a seduction strategy to the Demon Lord. "Seduce him, then when he is head over heels, defeat him with a surprise attack!" The Orc and the Demon Queen start rehearsing the plan. (Summary taken from the official EN translation from DLsite