The Abstinent Doctor Who Looks Cold but Is Secretly Very Coquettish

A cold and ascetic doctor who looks cold on the outside but is hot on the inside and even has some random thoughts, and a beautiful journalist sister who is sober, independent and has a successful career. What kind of sparks can be created when two very different people meet! (This is the first time for a child to write a book, so please bear with me (^^))