The purposes and methods of use are set forth below.</p> <ol> <li>Retention of basic settings<p>Cookies are used to retain settings such as User customized displays regarding Services in order to provide more convenient service environments to Users.</p> </li> <li>Login and account authentication<p>Services use cookies for automatic account authentication. When an individual’s pixiv account is used to login, the Services can be used without the need to input account information when accessing other pages and when logging in for the second and subsequent times.</p> </li> <li>