mini-hakkero

A small octogonal box with magical symbols (bagua) engraved on it, carried by Kirisame Marisa in Touhou. It's primarily used to unleash her infamous Master Spark spell card attack, and was crafted by Morichika Rinnosuke.

It is a reference to the hakkero from Journey to the West, the furnace in which Sun Wukong was imprisoned.

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