The Janitor CEO

To escape arranged marriages, two heirs from rival conglomerates hide their identities and sign a contract marriage with each other for freedom. When she's disowned and joins his company as a designer—only to be tormented by a rival from her past—he secretly poses as a janitor to protect her. As real feelings bloom between the "janitor" and the designer, their fragile world of secrets threatens to collapse when their true identities are discovered.