Koei Tecmo

Koei Tecmo Holdings Co., Ltd. is a Japanese video game, amusement and anime holding company created in 2009 by the merger of Koei and Tecmo. Koei Tecmo Holdings owns several companies, the biggest one of those being its flagship video game developer and publisher Koei Tecmo Games that was founded in 1978 as Koei. The company is best known for their Nobunaga's Ambition, Dynasty Warriors, Atelier, Ninja Gaiden, Dead or Alive, Monster Rancher, Fatal Frame, and Nioh franchises. They are also known for their work on external video game franchises, namely on Square Enix's Final Fantasy and Nintendo's Fire Emblem.

Source: IGDB