Rurouni Kenshin

Fly to Your Dreams: The Adventures of Marimo, the Human Bullet (1x17)

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The group goes to the circus and Yahiko takes a liking to the "Human Cannonball" girl Marimo. A circus boss tries to sabotage the show and make Marimo work for him, but the Kenshin-gumi entertain the crowd until Marimo can find the right mix of gunpowder and fly from the cannon.