straggling hair; lovelock
Hair too short to be tied up with the rest, typically around the sideburns or nape; often seen as a charming detail. The term 後れ毛 is more common.
See also: 後れ毛
The straggling hair on the nape of her neck is indescribably alluring.
With her yukata on, the lovelock hanging beside her ear looks charming.