Brand: Mitsubishi Pencil Co.
Made in: Japan
This one checks all the boxes for me....extra kanji, I can only imagine what it might say...Tokyo Senate? Takuya's Diner??
Founded in 1887 and formerly known as Masaki Yomato, Mitsubishi Pencil Co., Ltd. is best-known today for its “uni” brand of quality writing instruments sold worldwide. Curiously, this Tokyo-based business is unrelated to Mitsubishi Motors and other brands within the Mitsubishi Group. Same name, same logo, completely different company.