A/N: I sometimes imagine that this is what should have happened in "Daydreams and Nightmares" at the end instead. Aang has a nightmare on the last night, the worst of them all. He runs away, and Katara goes to find him. How will he handle this?

Rating: K+

Tonight is the last night before the invasion tomorrow. Everyone is sound asleep at night. But it's quiet, a little too quiet. Of course, only Katara notices that. Katara wakes up and looks at Aangs sleeping bag, but she's surprised to see that it's empty. Katara looks around, thinking what Aang could be doing. Ever since the nightmares, he's been trying to train hard for the firelords defeat.

Katara gets up and takes a look around. Katara walks up to Appa, hoping that Aang is around with him. So far nothing. Just then, Katara hears a fainted noise. It's too faint to tell what it is. Katara follows the sound until she stands in front of the woods. The sound is getting stronger. It sounds like someone crying. Katara widens her eyes realizing: It's Aang.

Katara runs through the woods, follow the sound. The further she goes, the stronger it gets. Katara kept run until she sees Aang in the middle of nowhere in the woods. He's setting down crying in his arms on his knees.

Katara walks up to Aang, puts a hand on his shoulder. Aang flinches a little then turns around. He's surprised to see it's Katara, but is also scared it would be her. "What's wrong, Aang?" Katara asks.

Aang turns away. "P-pl-pl-please. Get away from me." Aang says in a shaking voice.

Katara is surprised to hear him say that. "Why? What's the matter?" Katara asks.

"In my dream...I...I killed you." Aang whimpers in a shaking and fearful tone.

Katara doesn't hesitate to wrap her arms around Aangs shoulders. "Aang. It's okay. I'm right here, I'm safe."

"But you won't be." Aang says. "We were fighting the fire lord and...when I had him, I suddenly entered the avatar state. I-I couldn't control myself and then...then."

Katara hushes at Aang, telling him to calm down. "It's okay, Aang." Katara whispers in a tender voice. "It was just a nightmare. It's not gonna happen." Katara makes Aang face her. "Listen, I know you well. If there's one thing I know you'll never, ever do, is do anything to hurt me. Avatar state or not."

Aang just sniffles with more tears escaping from his eyes. "But-but...What if I do? ...I'm afraid that, if we battle the firelord. I'm gonna."

Katara hushes at Aang. "Stop." Katara whispers. "That's never gonna happen. Like I said, it was just a nightmare. I know it was scary to see something like that, but it's nothing to be afraid of. That's never gonna happen." Katara wipes away Aangs tears then places a hand on his cheek. "If there's one thing I know that'll happen, is that you'll defeat the firelord, and we're both will be alive and well."

Aang just looks at Katara, then quickly gives her a scared hug. "I'm...I'm still scared."

Katara gives Aang a hug then gently rubs his back. "Don't be, Aang. I'm all right. I'm right here. Everything's going to be okay." Aang and Katara stays this way for a couple of minutes. Aang feels a little better, his shaking settles down a little and he stops crying. "Come on, let's get you back to camp."

Katara takes Aang back to the camp. Aang lays down on Appas tail. Katara climps onto the saddle, then jumps off with a blanket. Katara lays the blanket over Aang. Aang looks at Katara, Katara smiles at Aang then gentle strokes his hair. "You ready to go to sleep?" Katara asks.

Aang widens his eyes a little hearing that. "I'm still scared." Aang says. "What if...what if I lose you? What if I wake up and...you're gone?"

"I'm not going anywhere, Aang." Katara whispers. "You won't lose me. Everything will be all right." Aang whimpers a little. He wants to believe Katara, but he doesn't feel convinced. "How about this:" Katara gets on the other side of Appas tail and lays next to Aang under the blanket. "I'll lay with you for tonight, and when you wake up, I'll be right here with you."

Aang looks into Kataras eyes. "You...promise?"

Katara takes Aangs hand and gives it a gentle squeeze. "I promise."

Aang relaxes a little. He's laying next to Katara, feeling warm and comfortable with her embrace. Aang rolls onto his side, facing directly at Katara. "I love you." Aang whispers.

Aang closes his eyes, but doesn't feel fully asleep. "I love you too." Katara whispers. Katara leans in on Aangs face and gives him a kiss on the forehead, on the arrow tattoo. "Sweet dreams, Aang." Aang forms a smile on his lips then falls asleep.

In the morning, Aang is still asleep. Just then, the sunlight becomes overwhelming and then Aang wakes up. He sees Toph and Sokka are getting ready for the invasion. Aang rolls onto his other side, but then smiles to see Katara's still next to him. Katara smiles at Aang then wraps her arms around him. "You're still here." Aang whispers.

Katara gives Aang a kiss on the cheek. "Just like I promised." Katara whispers.