"Miss Yuka Kunitachi, please be my daughter's mother."

--What are you saying to the first person you see, this guy?!
My father embezzled 500 million won from the company he worked for and ran away, so I, Yuka Kunitachi, ended up marrying a man I didn't know.
My counterpart is Kaji Ryo, the president of the company where my father worked. Besides, he is a single dad with a five-year-old daughter.

As a virgin who doesn't even known love yet, he's too much for me to bear...

Note: The manga is re-published with new name titled "Kosodate Shachou to Kousai 0-nichi Keiyaku Kon (子育て社長と交際0日契約婚)" in 2022 under the same publisher.