Naoki Yamamoto (山本 直樹, Yamamoto Naoki) is a Japanese manga artist. In his early years, he also used pen names Tō Moriyama (森山 塔, Moriyama Tō) and Mori Tōyama (塔山 森, Tōyama Mori) for his earlier adult-oriented works. He was born in Matsumae District, Fukushima, Hokkaido and graduated from Waseda University's Department of Literature.
Source: “Naoki Yamamoto (manga artist)”, English Wikipedia (CC BY-SA 4.0), excerpt