A movie of To My Boyfriend is also in planning stages. Despite her commercial success, Guiyeoni has been criticized for her lack of literary perfection, overuse of emoticons, and unrealistic setting in her works. Besides the aforementioned novels, she has also written Africa, Five Stars, and written and illustrated a manhwa called Syndrome.
A film adaptation of To My Boyfriend is also in development stages. Despite her commercial success, Guiyeoni has been criticized for her lack of literary excellence, overuse of emoticons, and unrealistic setting in her works. Besides the aforementioned novels, she has also written Africa, Five Stars, and created and illustrated a manhwa called Syndrome.