Mmmmm
Slay Immediately Evil? Sorry to nitpick, but that's s incorrect grammar.
Your graphics are good, but also at the same time, bad.
Still a very nice Flash, I'm going to put it in my favorites.
For the next Bakumatsu episode, might I suggest that you get some swing and sword sounds, and use those, instead of using a sound rip from the Kenshin anime? It (the sound rip) felt kinda out of place there.