The female lead enters an all boy band AN Jell, disguised as a boy, to help her twin brother.
She'd have to act to be him and not let anyone find this until her brother returns. Her hardships to protect her identity increases when she has to live with the band members.

The base story is similar. The female protagonist enters an all boys high school, under the hidden identity of a boy. Also, she lives in a dorm and shares room with boys. She must not let anyone find her secret before she accomplishes her goal.

Both movies are similar and not so similar in some ways. The elder brother is irresponsible and lazy while the younger sister is responsible and excels in everything. The brother just finds ways to frustrate her, and things go overboard when he interferes in her love life.

Both have similar plots. A sister who is frustrated with her irritating elder brother. But through many events, her bond with her brother tightens.