Kodaka-sensei made her debut in 1989 with Sessa Takuma! in Shounen Champion. Today she is one of the most popular Boys' Love authors. She is famous for her work on designing the characters for Triple X's BL anime Boku no Sekuhara (My Sexual Harassment) and is also the beloved author of Kizuna.
Matoh Sanami taught her how to draw using a shoujo-style. Sanami Matoh and Kazuma Kodaka are actually very good friends.
First thing first: The art is beautiful, truly amazing. Much better and much more consistent than in Kazuma Kodaka's other masterpiece, "Kizuna". I'm smitten.
Second, the story is simply sweet. I loved the background story about Masami and Masayoshi's past, about their mother and father - it made the characters much more three-dimensional. And the trip to Norway was quite funny too, but surprisingly touching what with their father and his "problem" with Masami falling for a man.