[Kyoutansan (Daizu)] Danzai Route o Kaihi Shiyou to Shita Akuyaku Reijou wa Futanari Seijo no Imouto ni Dekiai Saremashita [Kusanuu]

A reincarnated villainess plots to dodge her downfall by winning over Lilian, the saintly little sister fated to ruin her—only for her doting sibling's overwhelming affection and a meddling goddess's blessing to spiral into something far more intimate. Between breathless worship of her sister's generous curves and an aching, x-ray glimpse of the saint's divine gift taking root, the former villainess realizes the route she couldn't avoid leads straight to her sister's bed. Cozy chibi tea parties and matching ribbons give way to shameless, heart-pupiled ecstasy as the sisters' bond deepens into something neither can undo.