As the days went on, Mizuki still feels like Erika was hiding something, something so big that she has been keeping from them. 

She thought back of the day she was saved when Erika and Yui first appeared in the forest, and also of how quick she was fighting them. 

She also thought of her using Illusion Spell, as that the illusion was something based off of somewhere Erika had seen before. 

"Let's take turns." Leafa said. 

Erika asked, "Take turns of what exactly?" Mizuki said, "Oh, taking turns of watching over of our Avatars. 

We've been playing quite a while, so I think Leafa has a point there. Besides, it's been a week since we logged in. Our families must be thinking we haven't eaten or something." 

Erika blinks, "I've never considered that. All right, is it all right if I go first? It wouldn't take very long. " 

Leafa said, "Don't worry, Mizuki and I can watch over while you log off. " 

Erika nodded, as she went to sleep mode. Mitsuki said, looking at her, "She's strange, for a Sylph, she's pretty determined. 

Yui pops out of her mother's pocket, as Mizuki said, "Oh, Yui. " 

"No way, you can move while your master's out?" She exclaimed. Mitsuki said, "For your information, Yui and Erika, they're mother and daughter." 

"What?!? You're kidding!" Leafa exclaimed in shock, as the little pixie nods, conurring of what Mizuki said. 

"Yes, it's true. Didn't Erika tell you that?"

"No, she didn't. But why she wanted to go to the World Tree so badly?  It's really a bad idea and there is something she would know about the-" Leafa said, but then the discussion was disrupted when Erika woke up. 

"Back already?!? " Mizuki said, shocked.  Erika nods, "Yeah, my father wasn't there when I woke up, but my older brother did and made me dinner. I'm good to go. " 

After the exchanging, the group continue their flight towards Yggdrasil. It seems to be off for Mizuki and Leafa. 

They know that going towards the Tree is very dangerous attempt. Erika took a deep breath, as if the air comforts her. 

"Nervous about going to the World Tree?" Leafa asked. 

She replied, "A little. " But she was also thinking about what she had talked to back in IRL. 

Flashback: 

Asuna opens up her Nerve Gear, as that she knew that she couldn't take too long, but to her sudden surprise of who was in her room . 

"No way. Kouichirou? Why you here?" She asked, surprise of seeing her older brother . 

"What, can't a brother visit his little sister? Listen, tell me why?"

"Huh?"

"Why you go back? To the Virtual World?!? You already been through so much from the SAO Incident, so why did you go back?!?" He said, shaking her shoulders. 

Asuna was stunned by his reaction. She never intended to tell him that she has started going back to the Virtual World, but she knew that Kirito is waiting for her. 

"I had to go back. Kirito is waiting for me, he has been there for me, and now I want to return the favor. 

He needs me, Kouichirou, as I needed him." 

"You mean that boy you often visited in the hospital, Kirigaya Kazuto?"

"Yeah, I'm not going to stop fighting until he's back to our world, he has people waiting for him, and I intend to make things right, wither you approve of it or not!" 

______________________________________________________

The trio finally made it, it was very beautiful. The throng get along nicely and peacefully, it was nothing like anyone would ever seen before. 

"Wow. This is very beautiful. " Mizuki said, "I never been to the Capital of World Tree, so this is quite a good exchange. 

I'm glad I'm here with you guys. " 

Leafa nods, "Yeah, same here. It seems like a good journey to travel to Yggdrasil. " 

The girls continues walking through the plaza until Yui seems to be very shocked of what she has sensed. 

She pops out very quickly as she can, to inform Erika. 

"Hey, Yui... what's the matter?" Erika asked, as the two girls were also curious of why Yui came out as well. 

"Daddy." She said, which Erika was surprised as she hears it, "Daddy, he's here." 

Erika was shooken of what Yui said. She looked directly at her, "Wait, are you sure?"

"Yeah, I'm positive. I scanned again, and it's no mistake. It's Daddy's player ID, and his coordinates are above us in the Tree!" 

With that , realizing that the image of Kazuto came through Erika's mind, as she didn't hesitant for a split second as she opens up her wings! 

"What the-" Mizuki declared. 

Leafa said, "Wait! Erika! Erika!" 

Erika didn't listen to them as she continues flying up to the top of the World Tree.