Yami smiled before going off to the roof, confident that Yugi would be fine with the help both Yami and Serena gave him to defend Devin. Once upon the roof, Yami looked to the dark, black and purple clouds as Serena looked through the Binoculars. He nodded though she wouldn't notice. He sensed it was old as well, and powerful. Yami though took the Binoculars and scanned the streets and the sky. He heard her question before taking them from his eyes and handed the Binoculars back to her. "I am willing to help because they threatened my friends. Hurt them even. I don't take that kindly. Now they are threatening this city and soon to be the world." Yami paused as he subconsciously set a hand on his Millennium Puzzle. "I have been through these dangers and know what lies beyond. They were hard and not to be handled alone. My friends even know how handle darkness like this and respond to it. My part is to defend those who aren't able to defend themselves against this Dark."