On the first screen, press the "「利用規約に同意する」I accept the terms of service" button on the bottom right.
Enter the information on the Application Form screen, and click the "「申し込み内容の確認に進む」Proceed to confirm the application" button on the bottom right.
After confirming the information given in the application form, press the "「申し込む」Apply" button on the bottom right. If you want to change the information entered, click the "「修正する」Change" button on the bottom left.