Before she knew it, Xerneas found herself inside Snowpoint Temple, the place where Regigigas lived.
As she went deeper, it started getting more cold than it was on the previous floor. Xerneas hated the cold, but she knew she had to keep going if she was ever going to find Regigigas here. After what seemed like an eternity, Xerneas came to the final floor of the Temple, where there was a pale gray and blue room, frozen with ice and frost with stalagmites of ice growing on the floor.
There, in the back of the room, was a large golem-like Pokémon, with large golden bands on his shoulders and wrists, some sort of green bushes on the top of his head and feet, and a golden sloping section on his chest with seven dots in the alignment of a cross on it. He was leaning down restfully there, not moving at all. Although, when Xerneas stepped into the room, his eyes, which were red, blue, and gray, started to light up and he slowly rose from his position.
"It's alright!" Xerneas said to him as quickly as she could. "It's just me, Regigigas."
Regigigas stared at her before he slowly walked over to Xerneas, his movements slow and a little bit robotic.
"Xerneas." He said, his voice also robotic and a little monotone, and yet filled with life all at once. "Why have you come here?"
Xerneas took her time to explain everything. From finding the prism buried in the fort she was in, all the way to how Necrozma sent them to the future, and that Giratina was still in there.
"So now, we need your help." Xerneas finished. "I don't know what Giratina could be dealing with there, but I need you to help us just in case it's something big. It might even be Necrozma again."
"Situation understood." Regigigas said after a moment. "What do you want me to do?"
Xerneas held up the Adamant Crystal. "Activate this with your Hidden Power, and bring us to the future where Giratina is in."
Regigigas looked down at the crystal and reached out to take it. Once he had it in his grasp, the Adamant Crystal started to glow, along with Regigigas himself, who was covered in blue light all over his body. After a moment, blue light shot out from the Adamant Crystal, and it created a small portal in front of them. Xerneas's heart lifted. She turned back to Regigigas, her eyes shining.
"Thank you." She said, bowing her head in gratitude. "Now, let's go, we don't have much time now." And with that, she jumped into the portal, with Regigigas following behind her.