Yes. You can delete your account from "Account Information" on My Page.
If you are a monthly service subscriber, you can delete your account after suspending your renewal.
Deleting Your Account
- Tap "Account Information" on My Page.
- Scroll to the bottom of the screen and tap "Delete Account".
- Review the precautions, enter your password, then tap "Delete Account".
- Tap "Delete" on the final confirmation screen.
- Deletion is complete when the "Account deleted" screen appears.