This is Keio Yuugekitai (Keio Flying Squadron) for the Sega Mega CD, a 1-player shoot-'em-up / action game published by Victor Entertainment (catalog number T-60114), made in Japan. It includes the jewel case, disc, and manual/insert, as shown in the photos.
The case and disc show no significant visible damage, and the game has been tested by the seller and confirmed working. Please review all photos closely for the exact condition.
