Katara wasn't sure whether it was Aang's whimpers or his tossing and turning that woke her up—but she was awake now regardless. She blinked a few times, adjusting to the dark room, and could see beads of sweat on his forehead. Knowing all too well that he was having a nightmare, the waterbender placed a hand on his cheek.
"Shh, it's okay, Aang," she whispered. "It's okay. You're okay." The sleeping Avatar, however, did not seem to be aware of her presence.
With a sigh, Katara began to gently shake at his shoulders. "Aang. Sweetie, wake up."
Aang's eyes suddenly snapped open and he shot up with a gasp, startling Katara slightly. He took several deep breaths as he attempted to calm himself, hands shaking violently. "Katara...I—"
"Shh, shh. You were dreaming." She gently cupped his cheeks in her hands, bringing him close so that their foreheads touched. "It's okay, sweetie. You're okay."
His breathing deep and labored, Aang choked out, "I'm sorry, I—"
"—Don't apologize." Aang pursed his lips, staring down as the bed. "It felt so real."
"Do you wanna talk about it?" Katara stroked his face with her thumbs, wiping away a few tears. Looking at her with tear-filled eyes, Aang reached up to cup the back of her head. "I...just need to go back to sleep." Katara pursed her lips, nodding slowly. "Okay. Whatever you want."
The two slipped back underneath the warm covers, and Aang snuggled close to her, laying his head on her chest. She hugged him back tightly, kissing him on the forehead.
This one is short, sorry!