The names of the main characters, Asahi Kagami and Fuyuka Himuro, were deliberately chosen to suit the theme of melting the heart of an Ice Queen.
For example: the protagonist’s last name consists of the kanji for “fire” (火, read as “ka”) and “God” (神, read as “gami”). When combined, his last name means “The God of Fire.” His first name, on the other hand, consists of the kanji for “morning” (朝, read as “asa”) and “sun” (日, read as “hi”), which combined mean “sunrise.” So, in every meaning of the word, he represents the element of fire that will melt the Ice Queen’s heart.
The name of the main heroine follows the same formula. Her last name consists of the kanji for “ice” (氷, read as “hi” in this specific case) and “room” (室, read as “muro”). Her last name might appear strange at a glance, but it’s easy to infer that it means “Ice Room” when the two kanji are joined together. Her first name consists of the kanji for “winter” (冬, read as “fuyu”) and the kanji for “flower” (華, read as “ka” in this case). When placed together, it results in “The Winter’s Flower”—a name not only befitting her nickname “The Ice Queen,” but also her icy personality.
In one scene in Chapter 14 (Christmas Eve), the author makes a reference to the name of the restaurant Asahi’s parents manage. Soleil Levant is French for “sunrise.” Of course, this coincides with Asahi’s name, as it also means “sunrise” in Japanese.
It doesn’t stop there, however—the author also mentions that there’s only one lightsource in the restaurant in the form of a large chandelier hung in the middle of the room. This is meant to represent the rising morning sun. In other words, the entire restaurant was named and decorated around the theme of a “sunrise”—a way for Asahi’s parents to celebrate their son.
In the final line of the original chapter (Playing in the Snow with “The Ice Queen”), the author references Fuyuka’s first name, writing that she’s standing in the snow, as beautiful as a “winter flower.” This coincides with the kanji in her name, as explained above.
During the afterword, Kakeru Takamine, the author, mentions that he picked his pen name in accordance with what he wishes to achieve in the future.
“Takamine” can be divided into two kanji: the first means “high” or “lofty” (高, read as “taka”), while the second means “peak” or “top” (峰, read as “mine”). When put together, his last name would mean something along the lines of “Lofty/High Peak.”
His first name, Kakeru, is actually a verb meaning “to soar” or “to fly” (翔, read as “kakeru”). It makes sense that his pen name was picked specifically in order to show his lofty ambitions that reach for the sky, and that his aim is to soar among the clouds.