When did the company that produced "Six Gates Far Away Mon Colle Knight" begin?
Group SNE: Group SNE is a Japanese company founded in 1986 by the current president Hitoshi Yasuda, which produces role-playing games, light novels, board games and card games. Ryo Mizuno was one of the founding members. Group SNE:  Moreover, there are several anime adaptations based upon Group SNE's products such as "Legend of Crystania, Mon Colle Knights and Rune Soldier.
i don't know