I Became a Kindergarten Teacher for Monster Babies!-Chapter 577 I know why Boo didn’t come

Rocky followed Kelpie’s gaze, holding his polished stone carefully in both hands, his small stone fingers wrapped around it like it was something precious.

Luna stopped in front of them, planting her feet firmly, trying very hard to look calm and casual. Her arms were crossed over her chest, her weight shifted to one leg, her expression carefully arranged into something that said ’I don’t really care about this but I am telling you anyway.’

"I know why Boo didn’t come," she announced.

Her tone had that small, proud firmness that children sometimes get when they have important information. Like she had solved something all by herself, like she was sharing a discovery.

Kelpie blinked, his water spheres wobbling slightly.

"You know?" he asked, genuine curiosity in his voice.

Rocky leaned forward slightly, his eyes wide.

"Why?" he whispered, as if asking for a secret.

Luna lifted her chin just a little, savoring the moment.

"It’s a ghost festival," she said. "Teacher called his guardian. He is celebrating with his elders."

Kelpie’s face lit up immediately, his water spheres brightening with him.

"Oh! That sounds nice! A festival just for ghosts!"

Rocky nodded, his whole body relaxing, his shoulders dropping from where they had been tense all morning.

"So he is okay," he said softly, almost to himself. "He is not sick. He is not sad. He is just celebrating."

"Yes," Luna said, crossing her arms again, though her tail gave a small satisfied flick behind her that she couldn’t quite control. "He is fine. He is having fun. He is probably being very loud about it."

She turned slightly as if she was about to leave, her mission complete.

Then she paused.

Her ears twitched once, twice.

"...And he will come tomorrow," she added quickly, almost like she needed to say it out loud to make it real. Like saying it would guarantee it. "Teacher said he will come back tomorrow."

Kelpie smiled warmly, his whole face bright.

"That’s good. Tomorrow class will be loud again."

Rocky looked happy now, the worry finally gone from his small features. He carefully placed his polished stone down on the floor beside the others, arranging it just so.

"I will show him this tomorrow," he said softly, touching the stone with one finger. "He asked about it before. He wanted to see the shiny one."

Luna gave a small nod, watching him place the stone carefully.

Then she turned away again, walking back toward Vlad Jr.

"We should tell Felix, Sable, and Lucien too," Kelpie said softly, his eyes bright with gentle excitement. His water spheres had settled into a small puddle around his feet, forgotten for the moment. "They should know Boo is okay."

Before Rocky could reply, Kelpie took his hand and pulled him along with surprising determination. His small fingers wrapped around Rocky’s stone hand, warm and slightly damp.

"Come," he said. "They will want to know."

Rocky followed quickly, his short legs hurrying to keep up, still holding his polished stone carefully in his other hand, making sure not to drop it. He clutched it against his chest as they moved across the classroom.

Across the room, Felix, Lucien, and Sable were sitting together near the bookshelf.

They had drawn a neat circle on the floor with white chalk, a perfect, clean line that curved around them in a smooth loop. Felix had drawn it, probably, because only he would take the time to make it so precise. Inside the circle, they were sitting cross-legged, quietly playing their little game.

Sable leaned forward with full focus. He was moving something small across the floor, a little carved piece, a game token of some kind, his tongue poking out slightly as he navigated whatever path they had imagined.

Lucien sat beside him, watching closely, occasionally guiding him with calm instructions. His voice was low, steady, pointing with one finger when Sable seemed uncertain. He didn’t reach out to do it for his brother. He just helped him see.

Felix sat slightly to the side, leaning against the bookshelf with his arms crossed, observing the game with his usual composed expression. His book lay closed beside him, forgotten for once. He stepped in only when necessary, offering short, precise suggestions that made Sable’s face light up with understanding.

Kelpie slowed as they reached them, his steps becoming hesitant now that he was actually there. He stood at the edge of the chalk circle, water dripping softly onto the floor.

"Felix... Lucien... Sable..." he called softly, almost shyly.

The three of them looked up.

Sable’s hand paused mid-motion, the game piece hovering above the floor.

"Yes?" Felix said, his voice even, but his eyes curious behind his usual calm.

Kelpie smiled immediately, relief flooding his small face.

"Boo is okay," he said, the words coming out in a rush.

Sable’s eyes widened instantly, the game piece forgotten in his hand.

"Really?" he asked, his voice lifting with hope.

Lucien’s gaze sharpened slightly, his dark eyes focusing on Kelpie with more intensity than before.

"What happened?" he asked. "Where is he?"

Kelpie shifted excitedly, his water rippling around his feet.

"It is a ghost festival," he explained, the words tumbling out. "Teacher called his guardian. Boo is celebrating today with the other ghosts. He is having fun. He is having a parade."

Rocky stepped forward a little, nodding seriously, his stone face earnest.

"He will come tomorrow," he added, his voice quiet but certain. "Teacher said he will come back."

Sable’s face brightened instantly, and he sighed in relief.

"Oh! That’s good! That’s very good!" He looked at Lucien. "He is not sick. He is not sad. He is just at a party."

Lucien gave a small nod, his shoulders relaxing almost imperceptibly.

"That explains his absence," he said calmly. "A festival is a reasonable reason to miss class. Ghosts have their own traditions."

Felix rested his chin lightly on his hand, his expression thoughtful.

"...A festival," he repeated, as if tasting the word. "Acceptable reason. Better than being sick. Better than being sad."

He looked toward the empty corner near the window for a moment, then back at Kelpie.

"Good," he said simply.