A hairstyle in which two locks of hair are tied up on both sides of the head while the back of the hair hangs normally. The amount of hair tied up doesn't matter, only that the back of the hair falls down loosely.
Not to be confused with twintails, where all of the hair is tied up into two ponytails and nothing is left to fall freely.
Examples include Tohsaka Rin, Ultimate Madoka, Onozuka Komachi, most depictions of Kawashiro Nitori, Nena Trinity, and Souryuu Asuka Langley.
These posts are twintails, not two side up. The back of the hair does not hang freely outside of the twintails.
The following tags are aliased to this tag: two_sides_up (learn more).