![1girl absurdres aqua_eyes blonde_hair breasts crotch_plate flat_chest giantess highres horns large_breasts long_hair personification phalanx_(shadow_of_the_colossus) photoshop_(medium) pointy_ears revealing_clothes scan shadow_of_the_colossus shigatake solo split_tail strapless_bottom transparent transparent_breasts_pads wings rating:s score:52 post #618698](/cdn_image/preview/6f/8f/6f8fc301d025a78d682d7b11620abced.jpg)
For a monster girl, such as a mermaid or lamia whose legs are fused into a tail, but only starting somewhere below the waist, leaving the thighs still separated at the top.
At minimum, there must be enough room to run a string from front to back through the middle. Having an ass or vagina alone isn't enough.
This is frequently part of an artist's attempt to solve the so-called "mermaid problem."
Forked Tail : One tail that splits into two around midway.