Certain Common Stock of Media Research Institute,Inc. are subject to a Lock-Up Agreement Ending on 28-FEB-2022. These Common Stock will be under lockup for 179 days starting from 2-SEP-2021 to 28-FEB-2022. Details: Koji Tanaka, the seller and lender, and Masao Nomoto, Shinya Niigata, Yoko Taniguchi, Ryoji Yoshiyuki, Akiko Monji, and Daiki Yoshii, who are the sellers and lenders, and the shareholders of the Company, in connection with the offering and the sale of the underwriters. Is for the lead managing underwriter during the period from the date of conclusion of the principal underwriting contract to February 28 , 2022 , which is the 180th day after the listing (trading start) date (including the day) (hereinafter referred to as the "lockup period"). , The sale of the Company's common stock (excluding the sale of the Company's common stock for sale by the underwriter's purchase transaction and the sale by over-allotment), etc. without the prior written consent of the lead managing underwriter. Company have agreed not to do so.