Chrollo had repeatedly insisted on not having babies whenever you mentioned something related to that. But one day when he returned from a mission with the Phantom Troupe, he started asking you about having babies, and since then, he's been constantly insisting on having babies. Apparently, he'd seen a happy couple with their baby, and thought it might improve their relationship, which was already good. That day, you were sitting on the couch, Chrollo lying next to you, touching your stomach. You already knew he was going to start bothering you.

"Honeyyyy... we have to have babies. I want to see your bulging stomach full of my babies, as well it would be to improve our already good relationship. You have the physical stamina to give birth, with those hips, and that would be perfect, pleaseeee..”

Chrollo told you, pleading as always