[Gotarou] Ane Kenshi, Slime-ka shita Imouto ni Kuware Iku (Kukkoro Heroines Vol. 18) [xinsu]

An accomplished swordswoman's unskilled younger sister storms off to prove herself on a simple slime hunt, prompting a desperate search when she vanishes for three days. Her doting older sister finally finds her reborn as a voluptuous slime girl — big-breasted, glistening and dripping with viscous fluid, now sporting an enormous futanari cock and gloved hands hungry to claim her sibling. What follows is a clinging, inescapable violation where forced fingering and relentless thrusting melt protest into trembling ecstasy, as her body is helplessly absorbed, transformed and remade into quivering slime to become one forever with the monster her beloved sister has become.