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The naming of the page, "Halberd (Tsugumi)", has not been confirmed by official sources.
Tsugumi's weapon form is that of a traditional medieval halberd; it has a spear blade, an axe blade, and a hook blade. It appears as a white pole arm that has two protrusions parting away from the base of the main spear tip. A large, lavender "X" shaped cross is present between the three parts. While premature, it has three blunt edges, meaning it has no actual blade. At the bottom of the pole is a design resembling a heart or the end of a femur bone.
In its mature form in the anime, the halberd retains its intial design except the arm, which has extended. It has also developed actual blades. The shape of the weapon varies between whether Anya or Meme is wielding it; when Anya wields Tsugumi, the spear tip is elongated as the hook and axe blades are shrunken. With Meme, however, the axe blade becomes larger and other characteristics are diminished. The true shape appears when both girls are using the weapon.
This section of the article is incomplete and requires more information before it can be considered complete.