Manga by author Akahori Satoru - Status ongoing

Muon Sorata is an ordinary college teacher. However, there is a big secret beneath him. He is actually a mysterious "MOUSE" thief. He is smart, wealthy, powerful and influential. Above all, he steals everything. He has three beautiful female subordinates, but you can refer them as his slaves. Momozona Mei, a computer and physics expert; Kuribayashi Yaoi, a chemistry expert; and Kakio Hazuki, an agile fighter, good at combat and sports. And there is nothing that cannot be stolen by "MOUSE"...

From Tokyopop:In an age of magic and sorcery, the world is divided between those who have supernatural powers and those who don't. Fighting for justice and against black magic and evildoers everywhere are the Sorcerer Hunters: Gateau, Carrot, Chocolat, Mocha, and the rest of the gang. Their quest is to destroy each of the Platina stones- the objects the evil sorcerers use for creating their black magic - in an entertaining mix of farce and adventure.