Tsumugi is a Japanese creator credited as the original author of the manga series A Kiss on Tearful Cheeks. This series, which combines comedy and romance in a school setting, was published by Futabasha and serialized in Comic Mahou no iLand. The artwork for A Kiss on Tearful Cheeks was created by illustrator Yukie Sasaki. The series was published in nine collected volumes beginning in 2007.

No further biographical details, such as the creator's full name, birth date, or other notable works, are available in verified sources.