To participate in the National Institute of Informatics Open House 2024 (either by ticket application or online viewing), please log in here. * If this is your first time participating in an event at the National Institute of Informatics, please register first. * If you have previously registered on the event site registration form, please log in with the ID and password you registered with. * Registration with the same email address is not possible due to system restrictions. If you encounter an error stating "The email address value already exists," please click on "Forgot password" to check. * If your browser is set to "English," you can change the language setting after logging in. *ブラウザの設定で「英語」になる方はログイン後に言語設定で変更いただけます。