Tell the truth.

"Ah yes, that's right... I need to explain this..." Ada said, crossing her arms thoughtfully.

Vergil looked at her, confused. "Katharina, are you messing with me?" Vergil spoke to the air, but Ada stared at him, clearly not understanding what he meant.

"Hey! You're not thinking that—"

"Yes, come out, wherever you are; I don't want tricks like this. Not with the woman I love. Stop it immediately," Vergil said, completely serious.

"Pfff... Pff... HAHAHAHAHA!" She started laughing uncontrollably, just like Sapphire, but... at the same time... "So you think I'm Katharina playing games with you?" Ada grinned mischievously, as if she really was teasing him.

"Yes, exactly," Vergil replied, not even changing his serious expression.

"Oh... so that's how it is, huh?" Ada murmured, tracing her finger along her lips and biting them—intimidating, yet undeniably sexy.