Yoidore Koi wo Sezu

Synopsis

32-year-old Suwa Misumi is a Master of Sake and has just recently been fired from his job due to causing trouble from being "too friendly" since he doesn't like to refuse requests. At the lowest point in his life, he now finds a restaurant he desperately wants to work at. Only problem is that his latest drunken one night stand is the owner!! (Source: MyAnimeList)