If you're looking for manga similar to Gensou Suikoden: Uketsugareshi Monshiyou, you might like these titles.
The Highlander's help is requested in Etria, where an organization called the Radha hires him to explore a labyrinth. Soon, the highlander discovers an amnesiac girl in a futuristic tube, and meets some fellow investigators from the Midgard Library. The group of them team up as a party to continue their exploration!
Based on the 2D fighting game series King of Fighters. King of Fighters is a battle between the strongest teams of 3 in the world. The story revolves around Kyo Kusanagi one of Japan's team when they reach the end of the King of Fighters '95 tournament and what follows after they get back to Japan.
Geo is grieving the disappearance of his father and questioning the unusual partnership he has gained with the FM-ian Omega-Xis. By combining their powers, they are able to transform into the EM Wave Human named Mega Man and battle crime. Geo soon learns of the Wave Coliseum, a tournament that awards the champion a power known as Star Force. Geo believes this power will allow him to travel to space and find his father, so he enters the tournament. However, complications occur when one of the competitors, Gemini Spark, steals the Star Force in order to revive Andromeda, the king of the FMians. This story arc concludes with Mega Man discovering that Andromeda and his father Kelvin had fused as a single EM Wave Human. Defeating Andromeda, Kelvin is freed and returns to Earth to live with his family and new FMian friends.