Part 5 – A Simple Invitation
The students exhaled collectively, relief washing over them as they straightened up. Gloves adjusted. The circle broke apart, and one by one, they walked toward the academy building, ready for the next period to be delayed but already buzzing with thoughts of the challenges to come.
The students filed into the classroom, still breathing a little heavier from the repeated Seiryu practice. Some stretched their arms as they sat, others leaned back in their chairs, letting their bodies relax after the constant refining and release of energy.
The door slid open.
Daigo walked in, calm and composed as always. His eyes scanned the room, immediately quieting the remaining chatter.
"Sit properly," he said. "Your training may be over for now, but the lesson isn't."
The students straightened in their seats.
Daigo moved to the front of the room and rested one hand on the desk.
"You've just spent the last period sensing Ryuki, refining it into Seiryu, storing it temporarily, releasing it, and repeating the process." He looked around the room. "You're tired because that process strains both the body and the energy pathways."
Several students nodded quietly.
"Now," he continued, "listen carefully. What you felt today is important."
He began pacing slowly.
"Seiryu flows through the same energy pathways in every human body. Those pathways don't change. Your structure is the same."
He stopped and turned back to the class.
"But your control over that flow is not the same."
The room was silent.
"Some of you circulate Seiryu smoothly. Some of you force it through your pathways. Some of you lose stability and let the flow fluctuate. And some of you refine it well but struggle to store it properly."
He pointed lightly toward the center of the room.
"That is where your differences exist—not in the pathway itself, but in how efficiently your body handles the energy moving through it."
A few students began writing notes.
"Today's exercise was not about power," Daigo continued. "It was about awareness."
He raised a finger slightly.
"When you refine Ryuki into Seiryu, three things matter."
He wrote on the board:
Flow
Stability
Storage
"First—flow. If Seiryu moves smoothly through your pathways, you waste less energy."
He tapped the next word.
"Second—stability. If your control wavers, the flow becomes uneven. That reduces efficiency and can strain your body."
Then the third.
"Third—storage. Temporary storage allows you to hold refined Seiryu so you can use it when needed. If your storage is unstable, the energy disperses and the refinement becomes pointless."
The students listened carefully now.
"You repeated the cycle today so your bodies would begin recognizing that process naturally."
Daigo crossed his arms.
"Eventually, you won't need to consciously think about refining or storing Seiryu. Your body will do it automatically during combat."
He looked across the room again.
"Until then, you train."
He paused.
"So tell me—what did you notice about your Seiryu flow today?"
The room remained quiet for a moment as the students thought about the exercise they had just performed, reflecting on the way the energy had moved through their own bodies.
The classroom stayed quiet as Daigo continued explaining the principles on the board.
He went deeper into how Seiryu should circulate through the body without resistance, how forcing the flow could strain the pathways, and how temporary storage had limits. The students listened carefully, some writing notes while others simply tried to remember the sensation they had felt during the training outside.
"For now," Daigo said, tapping the board lightly, "don't focus on power. Focus on control. Power without control only damages your own body."
A few students nodded.
"Your goal at this stage," he continued, "is simple—refine Ryuki into Seiryu smoothly, store it without instability, and release it without losing structure. Repeat that until your body learns it naturally."
He stepped away from the board and looked across the class one more time.
"Training builds strength. Understanding builds mastery."
Just then—
DNNNNNNNNGGGG—
The bell rang.
Students immediately began closing notebooks and gathering their bags. Chairs scraped softly against the floor as the class slowly filled with chatter again.
Daigo picked up his notes. "Class dismissed."
Within moments, students began heading out of the room.
Ayame quickly packed her things and stepped into the hallway, spotting Hina nearby.
"Hina," she called, walking over.
Hina turned. "Yeah?"
Ayame spoke a little quickly. "Today we're having a birthday party at our house. You can come."
Hina blinked. "I… don't know."
Ayame smiled lightly. "Come with Miri."
Before Hina could say much more, Ayame waved and hurried off down the corridor.
Outside the academy building, Haruto and Kaito were already waiting near the gates.
Ayame jogged over to them.
Haruto looked toward the road and said calmly, "Let's go. Brother Renjiro is late."
Kaito adjusted the bag on his shoulder. "As usual."
The three of them didn't wait any longer.
The triplets left the academy grounds together, heading down the street toward home.
The front door opened as the triplets stepped inside after returning from the academy.
The house was calm compared to the busy streets outside.
From the kitchen came the quiet sounds of utensils and plates. Akari was inside, preparing food for the evening, occasionally moving between the stove and the counter.
In the living room, Renjiro was lying across the sofa, one arm behind his head, resting.
He looked toward the entrance when the three of them walked in.
"You're back," he said.
Kaito dropped his bag near the table and stretched his shoulders. "Yeah."
Renjiro sat up slightly. "I delivered the invitations to everyone."
"That fast?" Kaito asked.
Renjiro shrugged casually. "It wasn't that hard."
Haruto set his bag down near the wall and looked toward Ayame.
"By the way," he asked, "why were you late?"
Ayame paused while removing her shoes.
"I was inviting Hina," she said. "She was going to Yuji-san's place."
Haruto nodded slightly. "I see."
From the kitchen, Akari spoke while continuing her work.
"Good. Yuji will be coming tonight as well."
Ayame nodded. "Yes."
Renjiro stretched his arms and stood up from the sofa.
"Well," he said, looking around the living room, "you three should start the decorations."
Ayame immediately went to the table where the decoration bags had been placed earlier.
Kaito grabbed a pack of balloons and sat on the floor.
Haruto pulled a chair toward the wall and stepped onto it.
The room slowly began to change.
Ayame tied ribbons along the walls and across the corners of the ceiling.
Kaito started blowing up balloons and tossing them toward the couch and shelves.
Haruto carefully fixed the Happy Birthday banner across the wall.
Behind them, the sounds from the kitchen continued as Akari prepared the food.
The quiet house slowly filled with movement and light conversation as the triplets began setting up the decorations for Mimi's birthday.
The living room slowly filled with movement as the decorations began taking shape.
Haruto stood on a chair carefully fixing the Happy Birthday banner across the wall while Ayame worked on tying ribbons from the corners of the room. Kaito sat on the floor surrounded by balloons, already struggling to keep them from rolling away. Renjiro leaned casually against the table, occasionally handing tape or small supplies like a supervisor who had already finished his part. Meanwhile, Akari moved between the kitchen and living room, bringing small plates and snacks closer to the table, occasionally glancing at the chaos with a small smile.
Kaito's job was simple.
Blow up the balloons.
"Don't overfill them," Ayame warned while stretching to tie another ribbon across the ceiling.
"I know," Kaito replied confidently.
He grabbed a balloon and started blowing air into it.
It grew bigger… and bigger… and bigger.
Renjiro slowly glanced over. "That looks like a bad idea."
Kaito ignored him and blew even harder.
POP!
The balloon exploded loudly.
Kaito froze, staring at the small rubber pieces now in his hands.
The room went silent for half a second.
Then he calmly placed the remains on the floor.
"…It died."
Renjiro burst out laughing.
Ayame turned around. "You overfilled it!"
Kaito looked offended. "No, I didn't. It just couldn't handle the pressure."
Haruto, still on the chair adjusting the banner, said without looking down, "You literally watched it reach the size of your head."
Akari, standing near the table with a tray of snacks, shook her head with an amused sigh. "Boys…"
Kaito grabbed another balloon.
"This one will survive."
He started blowing again.
Renjiro walked past him and muttered, "Rest in peace."
Ayame shook her head but couldn't stop smiling.
Haruto stretched slightly to reach the last corner of the banner.
"Pass the tape," he said.
Kaito tossed it up.
Haruto caught it, but the chair wobbled slightly.
Ayame immediately looked up. "Don't fall. Mimi's birthday will become a hospital visit."
"I won't fall," Haruto replied calmly.
Right at that moment, Kaito's second balloon slipped from his hand before tying it.
The balloon shot across the room making a loud screeching noise as it deflated wildly.
Everyone turned to watch it fly in chaotic circles before landing near the door.
Renjiro slowly clapped. "Incredible. A new species of bird."
Kaito pointed at it proudly. "That one escaped."
Ayame laughed despite trying to stay serious. "Just tie them properly!"
Akari, setting a plate down on the table, chuckled. "He's hopeless, but at least he's enthusiastic."
Kaito grabbed another balloon.
"Relax," he said. "This time I'll control the airflow."
Haruto glanced down briefly. "You said that last time."
Within minutes, the room was filled with half-tied balloons, ribbons hanging slightly crooked, pieces of tape scattered across the table, and snacks precariously arranged by Akari.
But the house also filled with something warmer.
Laughter.
And somewhere in the middle of all the chaos—
Mimi's birthday decorations slowly came together.
After a few more moments of chaos, Haruto stepped down from the chair, stretching his arms.
"I'm hungry," he said simply.
Akari, who had been quietly tidying up the table and keeping an eye on everyone, smiled softly. "I thought you might be," she said.
She carried a few light dishes over from the kitchen—small sandwiches, fruit slices, and a few snacks—enough to tide everyone over without spoiling the main party feast. She placed them neatly on the table.
"Here," she said. "Just something light before the guests arrive."
Kaito immediately grabbed a sandwich and took a big bite. "Finally!" he exclaimed, crumbs falling onto the floor.
Ayame sat down beside Haruto and picked up a fruit slice. "Not too much," she teased.
Haruto simply nodded, taking a small bite. "This will do."
Renjiro leaned back on the sofa again, casually munching a snack. "Told you, food first, decorations second," he said with a smirk.
Akari chuckled, shaking her head. "You boys are impossible, but at least the decorations are done."
The living room now glowed warmly, filled with ribbons, balloons, snacks, and the quiet satisfaction of a job well done.
Everything was ready. The house was decorated. The snacks were set. The birthday party for Mimi could begin.
And for the triplets, for once, the day's battles and training could be forgotten—tonight was just family, laughter, and celebration.