A year ago, my sister's daughters 'meru' and 'yukari,' who divorced, have returned to the family home. The two nieces, who have been close to me since they were little, have repeatedly engaged in 'play' disguised as 'mischief' hidden from the family. The innocent girls, though lacking knowledge about sex, understand what feels good and are engrossed in forbidden incest with their beloved uncle, engaging in daily intercourse with internal ejaculation.
