[Popland (Hiiragi Poppla)] Transformation of sex into woman + α collection of works

A cursed shampoo rewrites one man into a blushing little sister who coos 'Oni-chan' and decides she'll stay lovely a while longer, while other hapless men are coaxed through rituals where accepting their new womanhood is the price of passage. From a dark passage where two curvy bathers find the exit to a freshly transformed mermaid whose heavy, glistening breasts and pearl-scattered tail follow an egg-laying birth, every change ends with a new body eager to be enjoyed. Hiiragi Poppla's compilation turns each swap of flesh into fresh temptation—siblings, lovers, and sea-creatures all discovering what their remade bodies can do.