Soft dawn light slipped through the shoji screens of Sai's dojo, painting warm golden stripes across the tatami. The air carried the faint scent of polished wood and lingering incense, but the usual quiet felt heavier today—empty, like the space where laughter and training commands used to echo.
Astra lay on his futon, black hair a messy halo around his head. He let out a long yawn, rubbing sleep from his silver eyes. At ten years old, he usually bounced awake full of energy, but this morning even that spark seemed muted.
"Sensei didn't come back..." he murmured, staring at the ceiling. "It's been two days already."
Aoi sat beside him on the edge of the futon, her wolf tail moving slowly back and forth like a worried pendulum. Her ears twitched at every small sound from the city outside—a distant cart, a bird, footsteps that weren't Sai's. She hugged her knees, golden eyes clouded.
"I'm worried about him too," she said quietly. "Sai-sensei is always so strong, but two days... that's not like him. What if something happened at the North Lake?"
Astra sighed, rolling onto his side. "Where could he go? He'll come back soon, right? My training isn't finished. He still has to show me that spinning water kick—the one where you look like you're dancing on waves! , or what ever but he told he will teach me that!"
He sat up abruptly, legs swinging over the futon edge. His gaze drifted across the room and landed on the low wooden table where a framed photo caught the morning light. In it, a younger Sai—expression softer than Astra had ever seen—patted the head of a teenage girl with wild hair and a bright grin. Yuki.
Astra's eyes widened. "Is that... Sister Yuki?"
He padded over barefoot and picked up the frame gently, holding it close. He tilted it, studying the details as if the image might speak. "She looks so happy here. Like nothing could ever hurt her."
Aoi watched him, tail stilling. "Yeah... that's her. Back when the curse wasn't so heavy. Sai-sensei was always there—protecting her like she was his little sister."
Astra traced a finger over the glass, a tiny smile flickering—then fading fast. The dojo felt too big without Sai's voice barking corrections or the splash of water techniques from the courtyard.
Aoi stood suddenly, ears flattening. "Astra..."
He turned, still holding the photo. "Yes?"
She sighed, rubbing the back of her neck, voice thick with reluctance. "Can you stay here alone for a while? I have to go."
Astra's face crumpled in instant shock. "Wait!? Why??"
Aoi's tail drooped low. She couldn't hold his gaze. "I'm going back to the jungle. If Sai-sensei isn't coming back... I can't stay here. The forest is calling me—my home is there, with the trees and the wind. Take care of yourself, okay? Promise me you'll be careful."
Before Astra could find words—before he could reach out and beg her to stay—Aoi turned and slipped out through the sliding door. Her footsteps faded quickly into the morning noise of Paras City.
Astra stood frozen in the middle of the room, photo still clutched to his chest. Slowly he sank back onto the futon, alone in the silence.
"Why is everyone separating?" he whispered. His silver eyes dimmed for a moment, like clouds drifting across the moon. The golden bell Sai had given him lay on the mat beside him, but he didn't reach for it yet. The hurt sat heavy in his chest—quiet, deep, and growing.
---
**The Great Jungle – Mid-Morning**
Deep in the emerald heart of the Great Jungle, sunlight filtered through the canopy in golden shards. Wano sat cross-legged on her woven-root throne in the open pavilion, green robes blending with the leaves. Across from her, a Paras City manager spoke in measured tones about trade routes, herb quotas, and the fragile city-jungle alliance.
Aoi burst through the underbrush, slowing to a jog as she neared. Her wolf ears were pinned back, tail lashing once before going stiff.
Wano turned, eyes lighting with warmth. "Ah, Aoi? It's been too many days since I've seen your face. What's going on? Why the sudden visit? Come, sit—tell your queen everything."
Aoi stopped short, fists clenched. "Don't talk to me."
Wano blinked, smile faltering. "But why? you've always been welcome here. What's wrong?"
Aoi turned sharply, marching toward a nearby cave mouth half-hidden by ferns. "Just... don't."
She disappeared into the shadows without another word.
Wano scratched her head with the feathered end of her quill, brow furrowed. "What's happening with that one? The winds carry no answers today..."
She sighed and turned back to the manager. "Apologies. Now, about the eastern border patrols—"
From a low branch, Uraka watched in slime form, pink tendrils quivering. She pulsed faintly. "Something feels off," she murmured to herself. "Like ripples spreading in still water... trouble coming."
---
**Sai's Dojo – Late Morning**
The sliding door opened with a soft creak, letting in sunlight and the smell of street food from below.
Yuki strode in, blindfold slightly crooked from a rushed morning, dark hair in a loose ponytail. Honokage floated beside her—shadowy, ethereal, red eyes glowing with quiet amusement.
"Astra\~!" Yuki called, winking. "What's up? You didn't cry during training with Sensei, did you? He's strict, but that's why he's the best!"
No answer.
No giggle. No excited rush.
Honokage's eyebrow rose. "Hmm? The kid didn't reply. Unusual. And where are Sai and the wolf-girl? This place feels too empty."
Yuki's grin faded to confusion. "Yeah... we should go in."
They stepped into the main room.
Astra sat cross-legged on his futon, holding the small golden bell Sai had given him. He turned it slowly in his hands, the faint chime echoing like a memory.
"Sensei... where are you?" His voice was small, barely there. His face—usually bright and mischievous—held a rare, raw hurt. No tears, but the pain was clear, carved deep.
Yuki's heart squeezed. She crossed the room quickly and sat beside him, wrapping her arms around his shoulders in a gentle hug. "Hey... Astra? You okay? Talk to me. Where's Sensei? And Aoi?"
Astra leaned into her, bell clutched tight. "I don't know... He's been missing for two days. Hasn't come back. Aoi... she left for the jungle. Said she couldn't stay if he didn't return."
Honokage drifted closer, placing a clawed hand on Astra's head—surprisingly gentle. "Everything will be okay, kid. Don't carry that pain alone. It weighs more than any curse."
Yuki pulled back slightly, voice steady but worried. "I think... he's gone to the North Lake side. His home. The Water Clan."
Astra's head snapped up, silver eyes wide. "Where is it? Take me there—now!"
Yuki stood, offering her hand. "Let's go. We'll drag him back if we have to."
Honokage chuckled low. "That's the spirit. Lead on, idol girl."
---
**North Lake Territory – Water Clan Dojo, Evening**
The sun hung low, painting the lake in orange and pink. In the flower garden behind the dojo—cherry blossoms clinging stubbornly—Sai sat on a weathered bench. The stone glowed warm in the fading light.
Suro sat beside him, legs tucked under, chatting with Clan Head Hyuga like old friends.
"And that's how Sai scared off those cats as a kid!" Suro laughed, wiping a tear. "It wasn't his fault—they're sneaky. But the way he yelped and summoned a mini-wave to 'defend' himself..."
Hyuga leaned back against an azalea, crimson eyes crinkling. "So that's the secret weakness of the Strongest? Feline phobia? Very odd for a water master."
Suro turned to Sai—then her laughter faded. He wasn't smiling. His gaze was distant, fixed on the rippling lake.
"Hey, Sai?" she said softly. "What are you thinking about? You look far away."
Sai blinked, returning. "Just... my students."
Suro's eyes widened. "You have students? Plural?"
Hyuga leaned forward, intrigued. "The Strongest as a sensei? That's a tale worth hearing."
Sai sighed, running a hand through his hair. "Yes... I raised a cursed child named Yuki. She's an adult now—strong, fierce, wielding demon power like it's part of her soul. She can make her own decisions; I taught her that. But there's someone special... a mythical dragon from another reality. Astra. Yuki trusted me enough to hand him over for training."
He paused, a faint, tender smile touching his lips. "He's intelligent beyond his years, powerful in ways that scare even me. Raw silver dragon-flame that could reshape worlds. But he's shy—hides behind jokes and wide eyes. I taught him not just techniques, but how to be human. How to laugh without fear, trust without being used. To not become a weapon like... like I was."
Hyuga closed his eyes slowly, nodding. "I'm glad. The Strongest with responsibilities beyond battle. It humanizes you, Sai."
Suro squeezed his hand. "Don't take it all on alone. Your students respect you. Whatever you decide, it'll hurt—but it's yours."
Sai gave a small smile. "Yes... I know."
From the garden path, three figures approached—Yuki striding ahead, Honokage drifting, Astra clutching a bouquet of wildflowers, silver eyes glossy the moment he saw Sai.
Suro blinked. "Are they... your students?"
Sai rose, warmth breaking through. "Only Yuki and the kid, Astra. I'm happy to see them."
Yuki grinned, waving. "There he is—our elusive sensei!"
Astra's face lit up. He rushed forward, thrusting the bouquet into Sai's hands. "Sensei! I picked these from the city gardens—they reminded me of the ones back home!"
Sai took them carefully, ruffling Astra's black hair. "Alright, kid... how much did you miss me? Be honest."
Astra hugged him tightly around the waist. "A lot! So much! When are you coming back to Paras City? Training's no fun without you!"
Sai drew a long breath, setting the bouquet on the bench.
Hyuga watched quietly.
"I'm sorry," Sai said softly, hand on Astra's shoulder. "But... I'm not coming back."
Astra stiffened. Yuki's smile faltered. Honokage's eyes narrowed.
"But why?" Yuki asked, stepping closer.
Honokage's voice rumbled. "This better be good."
Astra pulled back, looking up with glossy silver eyes. "Sensei...? Why?"
Sai knelt to his level. "I'm retiring, Astra. I've fought, taught, run, been a weapon my whole life. Now... I want peace. Real peace."
He glanced at Suro, eyes softening. "With Suro. Here, where it started."
Suro flushed, turning her head away.
Astra's lip quivered. "So... you're not coming back? Ever?"
Yuki crossed her arms. "You can't be serious, Sensei. You've taught us both—pushed us, held us. Astra's just a kid. He needs you."
Sai patted Yuki's shoulder—firm, reassuring—then Astra's head. "I know, Yuki. You're an adult now. Strong enough to guide him. You won't feel weak without me—promise you'll believe that. Learning to live without your sensei... that's the hardest lesson."
To Astra: "And you... you've got more potential than anyone I've seen. That dragon-flame inside you? It could light up galaxies. You won't break without me—you'll soar."
Astra's voice cracked. "But... I miss you. Who'll make me laugh when I mess up? Who'll tell me stories about the stars?"
Sai's throat tightened. He pulled Astra into a strong hug. "Don't worry. There are good people out there. And hey... I might sound like a comedian, but... I have a life too. One I haven't lived yet."
Hyuga spoke low. "I never knew the Strongest carried such burdens."
Darkness fell as the sun sank.
Sai extended his fist. "Let's keep it as a promise. You'll fight for everyone, protect the weak... and behave like a good boy. Deal?"
Astra wiped his eyes, bumping his fist against Sai's. A watery smile. "I will... I promise. For you, Sensei."
Yuki smiled from behind. Honokage held her hand gently.
---
**Aftermath – North Lake Garden**
Sai waved as they left—Yuki leading, Honokage beside her, Astra glancing back until the path hid them.
Suro grabbed Sai's hand immediately. "I didn't think... you'd come back for me, leaving everyone. But Sai... that's wrong. Really wrong."
He looked at her. "What do you mean?"
"You saw that silver-eyed kid's eyes," she whispered. "So innocent. So trusting. Leaving him... it broke something in him."
Sai's smile was quiet, tinged with guilt. "He'll grow from it. He's not a kid anymore—not in the ways that matter. He's mature in his heart. Stronger than he knows."
Suro squeezed tighter. "Promise you'll visit. For him. For all of them."
Sai nodded, pulling her close. "I promise."
---
**Paras City – Sai's Dojo, Nightfall**
The dojo gates stood sealed—wooden barriers marked with Sai's water seals. Moonlight turned the courtyard silver.
Astra stood before them, small frame silhouetted. He stared as if willing the gates to open.
Memories flooded:
Sai chasing him across mats after a failed technique, both laughing until they couldn't breathe.
Movie nights—Sai sneaking snacks, whispering jokes.
Aoi getting irritated when Sai mimicked her tail-wag, chasing them both.
Quiet moments—Sai bandaging a knee, voice low: "Pain's just a teacher, Astra. Listen to it."
The joy, the safety, the belonging—all crashed over him. His chest tightened.
Astra's silver eyes glowed faintly in the dark. Fists clenched. Tears fell, pattering on stone.
Yuki approached, patting his shoulder. "Don't cry... I'm here."
"But... who will train me now?" His voice broke. "Who'll talk to me? Play with me? Understand me?"
A cape fluttered.
Blu landed lightly—arms folded.
"So? Sai is gone. Let him go. He earned his peace."
Astra looked up, sniffling. "Uncle Blu...?"
Blu knelt, ruffling his black hair. "I'll train you. From now on."
Astra tilted his head. "Really? Will you... be like him?"
Blu smiled warmly. "I can't be like him—no one can. But I won't let you be alone. And discipline? I'll keep you in line. You'll learn to control that dragon fire without burning the city. Deal?"
Astra's smile returned—bright, hopeful. He hugged Blu tightly. "Thank you! Now you're my sensei!"
Yuki watched softly. "He's so innocent... isn't he?"
Honokage smirked. "Yeah. The future... wrapped in one little package."
As they turned toward the city lights, Astra glanced back once more at the sealed gates. The hurt lingered—but so did the promise. A spark in his silver eyes, ready to burn brighter.