[Aiaigasa (Bangasa Bangaichi)] Kuni Umi no Keikoku (Touhou Project)

A determined spirit vows to birth a nation, setting off a surreal metamorphosis. The once slender form swells dramatically, its hips and breasts thickening as it becomes a living womb that absorbs and nurtures life. Amid escalating desire and conflict, the tale blends mythic ambition with erotic transformation.