A variation of [[two side up]] in which some locks of hair are tied up on one side while the rest hangs normally. Neither length or volume of the tied up hair nor that of the other free-flowing hair matters for tagging purposes, only that the <b>remaining</b> hair falls down loosely.

Not to be confused with [[side ponytail]], where the majority of one's hair—save for [[sidelocks]]—is pulled up into a ponytail that leaves <b>no</b> hair falling loosely.

h5. Examples
* post #6414776 (short hair, short side up)
* post #6426051 (short hair, long side up)
* post #6373182 (medium hair, short side up)
* post #6373249 (medium hair, long side up)
* post #6431000 (long hair, short side up)
* post #6428462 (long hair, long side up)

h5. Not [[one side up]]
* post #6427886
* post #6380523
* post #6423826
ワンサイドアップ サイドアップ ハーフアップ