[Kimi ni Shuushin (Burger Sand Kimi)] I Have to be the Founder of Space’s Pair! [Sunday Scans]

A towering, muscular alien whose back sprouts a writhing mass of living tentacles comes to claim the human girl destined to become his pair, and her body starts answering long before her mind catches up. What begins as a flustered, blushing lesson in her own tingling arousal gives way to tentacles plunging deep enough to bulge her stomach, leaving her drooling and crying with heart-shaped pupils as double penetration works her toward a mind-breaking peak. When the truth finally surfaces that she was born for this, the story closes on the alien pressing a tender kiss to his blissfully smiling mate.