[Kirin Planet (Mankai Beesuke)] Gibo to Boku no Ninkatsu Keikaku [DarklordMTLs]

Haruka, a curvy young stepmother with heavy breasts and a soft belly, becomes the target of her stepson's relentless impregnation plan. Her shy embarrassment in lace lingerie gives way to rough, sweat-soaked breeding sessions where he pins her plump body down and finishes deep inside, drowning out her protests until she's left panting and filled. With a fertilized egg sealing her fate and daily lovemaking becoming routine, Haruka's body belongs to one purpose now — carrying his child.