Mutsuki is a Japanese word that translates to "the month of the moon" and is often associated with the lunar calendar. In Japan, Mutsuki refers to the first month of the year, typically falling in January. It is a time when people celebrate the New Year and engage in various traditional customs and festivities. In popular culture, Mutsuki is also the name of a character from the video game series Kantai Collection. This character is depicted as a destroyer ship and is known for her youthful appearance and cheerful personality. Mutsuki has gained popularity among fans of the series for her design and backstory.