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Around the world, Ryoichi (Ryoichi , 良一 , 亮一 ) is a rare predominantly masculine, but scarcely female forename. The first name Ryoichi is habitual in Japan, where it is a rare masculine name, Indonesia, where it is a very rare male name, and China, where it is a very rare mostly male, but seldom feminine name. Also, Ryoichi is the last name as well as the forename.
Ryoichi is also a name for the fictitious and mythical characters: Ryoichi Taniguchi , the fictional character from the 2017 video game Yandere School.