No, deleting your LINE account will not delete messages. If you want to delete messages on the LINE app, you have to go into the chat and delete them individually.

Yes, you can have as many LINE accounts as you want.
You can be signed into as many LINE accounts as you like.

If you delete someone on LINE, they will be removed from your contacts list. You can also remove them from your “My Friends” section by pressing the “x” icon next to their name.

Yes, someone still can send you a text message even if you deleted your LINE account.

Line is a messaging app that uses phone numbers to identify people. There are two ways to tell if someone has deleted you on Line:
1) Check the “white list” on Line. The white list is a collection of contacts who can see your profile and contact you on Line. If the person who deleted you was in your white list, they will be removed from it after they delete their account.
2) Log out of Line and log back in again.

To change your LINE account, you will need to visit the app store on your device and download the LINE app. Once you have downloaded the app, you will be prompted to sign in with your email address and password. You can then update your account settings by following these steps:
1) Tap the menu icon at the top left of the screen.
2) Tap “Settings” from the list that appears.

No, LINE does not show your phone number.

No, LINE is a messaging app that requires a phone number to use.

No, people will not know that you blocked them on LINE.

LINE is a messaging app that can be downloaded on any mobile device. As with other messaging apps, LINE does not allow you to delete messages.