https://www.dlsite.com/maniax/work/=/product_id/RJ144770.html
2-66: Lower Resolution Text
67-116: Lower Resolution Textless
117-181: Higher Resolution Text
182-231: Higher Resolution Textless

p.3
Top left red head is daughter from first wife,
green hair is oldest daughter from second wife,
brown hair is third wife,
silver blue is eldest son (younger brother of green hair) from second wife.
The dude is servant of the house.
The husband/father is not shown.

So we have half-sibling incest (red head & the son), full sibling incest (green head & the son), step-mother incest.

Base +8