How to remove your Line account
In the app, you should be able to delete your account (settings or the like). If that doesn’t work however, contact the Line makers using: https://line.naver.jp/cs/en/
Fill in the appropriate fields and explain your story/request. In their ToS/PP it is clearly stated that closure of your account/data is a true removal. No turning back!
Helpful Trick: Removing online data
Publicly visible text/images often aren’t properly removed even when you succeed in removing an account. Try editing or removing them manually before removing the account itself. If you’re unsure what happens to your tracks: this can be found mostly in the Terms of Service/Privacy Policy; otherwise you can always contact Line and ask personally. By the way, removal requests don’t necessarily mean your data will actually be removed (e.g. due to legal obligations).
Helpful Trick: Remove third-party logins
If you signed up for Line using a third-party login such as Facebook or Twitter, you probably want to revoke all access from Line. Click here to find out how.