Games like Valkyrie no Bouken: Toki no Kagi Densetsu

If you finished Valkyrie no Bouken: Toki no Kagi Densetsu, the closest matches are The Seven Deadly Sins: Origin, Ravenlok, Blue Protocol, The Legend of Sword and Fairy 7 and Big Time. All 8 share its adventure genre and are ranked by how closely their themes and modes overlap.