Kaiketsu Yanchamaru is an action platformer released for the NES in Japan. It's known for its challenging gameplay and unique character design.  The game features side-scrolling levels with platforming challenges, requiring precise movements.  The player likely controls Yanchamaru, engaging in combat using a variety of techniques and possibly items.  While specific development information is limited, it's a notable example of the fast-paced action games on the NES.

Kaiketsu Yanchamaru (Japan)

Kaguya Hime Densetsu (Japan)