The Red Goddess Blood

"I wasn't keeping an eye on Gojo, I never expected that little girl Lucy to have it in her to try something…so risky." Cain looked at her, "As a human she was just a little girl, even as a demi-goddess or a full goddess, she is still a little girl. That stunt of her was nothing but a gamble."

"Reminds me of a certain idiot. You should've tried to at least lock the universe." Vasilissa slowly floated down, her body burning with purple magic as her eyes flashed dark purple.

It was almost immediately clear, that she was the one who just locked the universe, and what more, the locking magic has rules. It only blocks abominations from getting inside and allows everyone else to pass. Another rule she had set was that Gojo and Arad were especially forbidden from leaving the universe, if they tried to teleport out of it, they'd just teleport in place without moving an inch.