Ninja Ryuuken Den is a Japanese action game released on the NEC PC-FX. The title translates to something like "Ninja Dragon Sword Story."  Based on the title, it likely involves a ninja protagonist and features sword-based combat against enemies.  Gameplay might involve exploration and stage-based progression, typical of action titles from that era.  Development and publication were likely handled by a studio working with or for NEC, given the game's exclusive release on their console.

Ninja Ryuuken Den (Japan)

NHK Taiga Drama - Taiheiki (Japan)