This is a multi-functional ballpoint pen (not for sale) created in July 2024 to commemorate the 110th anniversary of the Tobu Tojo Line's opening. This multi-functional pen has four convenient functions: a semi-permanent pencil, a ballpoint pen, a stylus, and an eraser! A semi-permanent pencil is a pen made of special graphite that does not require ink refills or sharpening, and can be used semi-permanently. "Features of the Semi-Permanent Pencil" ● You can write with it like a pencil and erase with an eraser. ● The lead is hard and has a structure that makes it difficult to break. ● It can be used semi-permanently, making it economical and environmentally friendly.