Under the guise of
라이언의 꿀팁백과
~을 가장하여, ~을 구실로; by saying or acting as if something is other than what it really is
- She swindles people under the guise of friendship.
- Under the guise of work, Yi-jin takes Hee-do and Yu-rim on a weekend getaway to the ocean - and agrees to let Ji Seung-wan and Ji-woong tag along.