Cavalier of the Abyss fanfic: every possible theories and mysteries unfold

Welcome back, my princess part 3

"Guh....." xix spluttered blood. He fell down on his knees and was trying to hold his breath, preventing himself from going to shock. Ninoruut walked past him towards the sleeping princess. 

'No good...i..cant..move...' xix couldnt not move: the ice shard was too big for him; it was the same as his height. He tried to adjust his balance and saw ninoruut holding Siana in front of him. Ninoruut placed Siana in front of him.

"Now..be good, and wake our dear sister...brother. afterall, you had always been her knight, right?" ninoruut said and pushed Siana's face towards him. The kiss lasted only for a moment, and xix was beginning to feel hazy and weak.

'My...consciousness...no....help..me...Skoll!' Xix's last thoughts as he fell into darkness.

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"....!" Skoll jerked his head in a distance. He can feel xix slowly fading away. 

'Tch' he cant die in a place like this. He vowed to protect the little boy and in return, xix will help him defeat his creator- Osky. It was their contract. 

Skoll and xix had the contract during xix's stay in Osky's dimension. Skoll had always this feeling that xix is something more than meets the eye.  True enough, he learned things under Osky and apparently was learning the tae gyuk and was about to master it. There was another thing that made skoll bound to xix- it was the fact that he had a demon blood flowing in his veins and he had the magic stone of the demon clan: Semek. 

'There is no time, i need to get to him' skoll thought as he make his way through the hellish place.

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Siana blinked. She feels sluggish and as if her limbs were not part of her body. She slowly adjust her eyes in the surroundings and saw ninoruut. She came up with a realization that he was carrying her, bridal style, in the hallway, towards to her room.

"P-put me down...nin!! I can stand-" siana squirmed in ninoruut's arms and noticed that she was in her original body. Her hair had grown longer too.

'But how?' Siana thought and ninoruut, as if reading her mind, answered her.

"Welcome back, sister. You had woken up with no problems, i am glad." Ninoruut smiled at her. Siana smiled at him but still held some questions in her mind.

"How was i able to return...furthermore...my heart is here...." siana mumbled and was about to ask ninoruut about it when the place trembled.

"Wha-what is going on?" Siana asked instead. She then turned to ninoruut.

Ninoruut had this blank stare but grinned.

"We should welcome them, siana."

"..who?" Siana frowned. 

"Our parents."