Certain Common Stock of GRCS Inc. are subject to a Lock-Up Agreement Ending on 16-MAY-2022. These Common Stock will be under lockup for 179 days starting from 18-NOV-2021 to 16-MAY-2022. Details: In connection with this offer and the sale by accepting the purchase transaction of the underwriter, Yoshikazu Sasaki, a stock lender, and Trojans, Takuya Tsukamoto, Ikue Tanaka, Satoshi Miki and Keiichi Kubo, who are shareholders of the Company, have become lead managing underwriters. On the other hand, during the period from the date of conclusion of the principal underwriting contract to February 15, 2022, which is the 90th day after the listing (starting of trading) date (including the day), the Company normally without the prior written consent of the lead managing underwriter. Agreed not to sell shares, etc. (excluding the lending of the Company's common stock for sale by over-allotment and the acquisition of the Company's common stock subject to the Green Shoe Option by the lead managing underwriter, etc.). In addition, the seller, Nissei Capital No. 7 Investment Business Limited Liability Union, and our shareholders Satoshi Itakura, Himawari G4 Investment Business Limited Liability Union, Innovation Engine Industry Creation Investment Business Limited Liability Union, Nobu Inazu, Hiroyuki Kato, Iwate New Business Creation Fund No. 2 Investment Business Limited Liability Union, Mitsubishi UFJ Capital No. 7 Investment Business Limited Liability Union, Takahiro Kamisaki and Atsushi Okubo will be listed (started trading) on the lead managing underwriter from the date of signing the principal underwriting contract. During the period until February 15, 2022, which is the 90th day after (including the day), the sale of the Company's common stock, etc. (however, the sale by the underwriter's purchase transaction) without the prior written consent of the lead managing underwriter. And the sale price is more than 1.5 times the issue price in the "1st Recruitment Guidelines", excluding sales made through the lead managing underwriter). In addition, the Company will inform the lead managing underwriter in advance of the lead managing underwriter during the period from the conclusion of the principal underwriting contract to May 16, 2022, which is the 180th day after the listing (starting of trading) date (including the day). Issuance of the Company's common stock, issuance of securities converted or exchanged for the Company's common stock, or issuance of securities entitled to acquire or receive the Company's common stock, etc. without written consent (however, this offer) , Excluding stock splits and issuance of stock acquisition rights as stock options.)