Ishuzoku Tsuihou ConCafe

Yoshida Yoshio, an office worker whose hobby is visiting various concept cafes, hears rumors about a "con cafe with a strange atmosphere that opened nearby." Intrigued, Yoshida visits the shop, and finds three unmotivated but quirky con-cafe girls with an unlikely backstory. These girls are actually real demons, dwarves, and elves...!? (Source: ComicWalker, translated)