thelastssk, 1boy, solo, looking at viewer, heterochromia, red eyes, purple eyes, ringed eyes,
hat, hair between eyes,
poncho, high collar, jewelry,
grey pants, bandaged leg,
toeless footwear,
bandaged arm, sword,

If you don't like bad eyes,

no pupils, black eyes, 

are also helpful.

#Alternative:

one-armed,
bandaged head, #remove hat, 
sword of kusanagi, #remove sword, 
uchiha sasuke, #this tag is heavy