Koei Tecmo has a long history with Nintendo and when it comes to the Switch, they have been has been one of the stronger third party supporters. They have already released Romance of the Three Kingdoms XIII and Nobunaga’s Ambition: Sphere of Influence in Japan and have more announced. Nobunaga’s Ambition: Taishi and Nights of Azure 2, were announced recently and they are developing Fire Emblem Warriors as well.
The company has a lot more in the works for Switch apparently. Keiko Erikawa, the company chairman, stated that the company’s multiplatform engine has Switch embedded, which means they can now generate PC, PlayStation, Xbox, and Switch titles all automatically which will make development much easier.. Erikawa also spoke positively about Switch’s hybrid concept and play anywhere motif, as a reason why they will support it.
Most notably however, was that Erikawa confirmed that Koei Tecmo has several Switch exclusives in the works and the company plans to release as many Switch games as possible, one after the other.