3 > < age difference birthday blue body blush bodily fluids body part in pussy brother penetrating sister brown body cowgirl position cum cum in pussy cum inside duo eyes closed female on top female penetrated feral feral on feral feral penetrated feral penetrating feral penetrating feral feral pov first person view from front position genital fluids genitals grass heart symbol implied orgasm impregnation risk inbreeding knot knotting larger female larger feral larger penetrated lore:brother (lore) lore:brother and sister (lore) lore:incest (lore) lore:sibling (lore) lore:sister (lore) lying male on bottom male penetrating male penetrating female male/female meta:animated meta:digital media (artwork) meta:high framerate meta:huge filesize meta:long playtime meta:pixel (artwork) meta:pixel animation meta:sound meta:webm music navel older female on back on bottom on top orgasm penetration penile penile penetration penis penis in pussy plant pussy questionable consent sex site:e621 size difference smaller feral smaller male smug smug face speech bubble synced to music tail tail motion tailwag text vaginal vaginal knotting vaginal penetration wavy mouth young young feral young male younger male