Rumor has it there’s corrupt guildmaster who keeps banishing his members one after another. That "tyrant" is Act Enge—the founder and leader of the rising S-rank guild, Heaven’s Gem. Having once suffered a wrongful expulsion himself, Act refuses to cast anyone out without careful thought... and every person he banishes ends up landing an even better position!
Surrounded by a cool-but-puppy-like maid, a tomboy princess, an absurdly strong hero, and a whole roster of eccentric allies who trust him deeply, this "corrupt" guildmaster just can’t stop finding, fostering, and banishing people! 
(Source: Manga UP!)