Black Belt Sega Master System (1986) Boss Run - No damage (including Oni)

I used to love this game back in the 80s as a kid. The levels are quite repetitive, but the bosses are a really nice touch. Note the combos and finishing moves, predating Street Fighter 2 and Mortal Kombat by several years :-) I'm not sure if the final boss technique is a glitch in the game or not, but it works.