nippon ichi software, inc. (株式会社日本一ソフトウェア, nippon ichi sofutowea, known as prism kikaku ltd. from july 1993 to july 1995) is a japanese video game developer and publisher. they are responsible for such titles as the disgaea and marl kingdom tactical role-playing series, as well as phantom brave and la pucelle: tactics. more recently, particularly through their north american branch, nis america, they have also published anime titles. its corporate mascot is the disgaea demon prinny.