[Ruman-dou] Komarigao na Bijin no Ane o Osotte Yaritai Houdai Yatta Hanashi -Suiminkan- [Full Color]

An older sister, half‑asleep in a revealing swimsuit, slips into her brother's bathroom while he boasts about his heated bath, unaware of the danger she invites. The tension spikes as he, driven by a throbbing desire, forces himself upon her, turning playful teasing into a violent, non‑consensual encounter that shatters the illusion of familial innocence. The story unfolds in stark, full‑color panels that capture the raw, rough translation of desire and domination, ending with a climax that leaves the viewer questioning the limits of sibling boundaries.