It was released on November 2, 2011, two years after her previous solo single "Ariamaru Tomi" (2009), during a period where she primarily worked with her band Tokyo Jihen.

In 2009, Sheena released the solo single "Ariamaru Tomi" and the album Sanmon Gossip after mostly focusing on her band, Tokyo Jihen.

However, after reading the script and watching the stop-motion sequence Koichiro Tsujikawa created for the opening, she decided an entirely different song with a universal feel would be better suited.

[4] Even though she was asked as a soloist to create the theme song, Sheena wanted to include her band Tokyo Jihen in the process.

[3] The B-side "Jinsei wa Omoidōri," as it was a candidate song to be used in the drama, was inspired by fashion designer Ayako Koshino, the subject of Carnation.

"Watashi no Aisuru Hito" became "Mon Amour" ("My Love"), while "Jinsei wa Omoidōri" became "Le monde est à moi" ("The World Is Mine").

[10] CDJournal reviewers agreed, stating that three aspects, the song's "retro world view," Sheena's "whisper-like mysterious voice" and the "calm strings" came together to create a "beautiful waltz.