メインアカウント

noun

main account; primary account

Refers to one's primary account on social media, online services, or games, as opposed to a sub-account or alt account.

• メインアカウントでログインしてください。

  Please log in with your main account.

• サブ垢あかよりメインアカウントのほうがフォロワーが多おおい。

  My main account has more followers than my sub-account.