Whether it's POV, or a background character you should always add this if a singular male is present in the image, however this tag does not imply mentioned character's or offscreen character's that just so happen to be male.
However if the character's gender isn't specificied or is hard to decipher (i;e characters like Doctor from Arknights) then it's best to tag 1other
Hell yeah inclusivity!
The following tags are aliased to this tag:
1boys
(learn more).
