Collapsing Katana Safety Guard

This is a very simple and easy-to-use safety guard for the Collapsing Katana 天鎖斬月 (BLEACH -Tensa Zangetsu) made by @mail.iou. When properly positioned, it prevents the collapsing blade from extending, making it easier to carry around in collapsed state. Pushing it all the way to the side, where the blade is wider, allows the blade to fully extend.