[Binsen] Neko no Ongaeshi (Towako 6)

When a young man forced to become head of his family after his father's early death comes home, his devoted maid Suzu greets him—only to end up pinned beneath him as guilt melts into need. Her repayment runs far deeper than housework: cat ears and a curling tail emerge, and this catgirl's demonic devotion has her milking him dry, begging for his seed in the deepest part of her womb. By the final page she's visibly pregnant, waving her 'honey' off with a hand resting on her rounded belly and a smile that hints this cat's gratitude has claimed his bloodline for generations.