GEMN is a Japanese music duo formed in 2024 by Tatsuya Kitani (キタニタツヤ) and Kento Nakajima (中島健人). Conceived as a collaboration between the two artists, the project brings together pop, rock, and contemporary J-Pop influences, with the contrast between their expressive vocals and energetic production shaping its dramatic style. The duo entered anime music with "Fatal (ファタール)," the OP of "Oshi no Ko." Through that release, GEMN became part of the broader anison and J-Pop landscape while remaining centered on a collaboration-driven format rather than a fixed band lineup. Its official website is https://gemn-official.com/.
