Some of you guys asked me for the series' official LINE ID. Here you go... click the button below and scan the code via LINE (Menu-->Add Friends-->QR Code)
... alternatively, find the QR code yourself:
Right now, you can't use LINE's own ID search (Add Friends --> Search --> ID) to search for the account. And it's not listed in Official Accounts (Thailand) either.
You'll need to visit the series' official website and get the code from there. Visit 2moonstheseries and click the big green button that says "Add Friends" (see image below).