Hell's Core is the 380th chapter of Hiro Mashima's Fairy Tail. Wondering about what Hades said, Happy sets off to find Makarov. Meanwhile, after knowing that Hell's Core is what makes the Demons immortal, Mirajane uses her Take Over to destroy the place. Learning that both can't use their full powers, Seilah opens her Limit Release ability, leaving Mirajane, Lisanna, and Lamy grievously injured after the blow.