Sōichirō Yamamoto (山本 崇一朗, Yamamoto Sōichirō; born May 30, 1986) is a Japanese manga artist. He is known for writing and illustrating Teasing Master Takagi-san, Fudatsuki no Kyōko-chan, In the Heart of Kunoichi Tsubaki, When Will Ayumu Make His Move? and Mane Mane Nichi Nichi, some of which were run simultaneously during their publication.
Source: “Sōichirō Yamamoto”, English Wikipedia (CC BY-SA 4.0), excerpt
