Divine Sealing
From Sega Retro
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Divine Sealing (ディヴァインシーリング) is shoot-'em-up by Studio Fazzy for the Sega Mega Drive, most likely made in 1991 (although the game itself doesn't say.)
During gameplay, B shoots, while A is used to advance in the cutscenes. Every 10,000 points you earn a shot upgrade and an extra life.