[Completed!] Osomatsu-san: Our 7th Brother?! (Fanfiction Story Movie)

Chapter 11: Haruto's Hidden Secret

The Matsuno household was unusually calm that evening. After Karamatsu's dramatic test in the town square, the energy in the house had mellowed, fading into its usual blend of distant laughter and footsteps echoing through the halls. For once, the brothers had scattered across the house, giving Haruto some much-needed space to breathe.

Alone in the shared bedroom, Haruto sat beneath the warm desk lamp, its soft glow catching the edges of his glasses as he stared quietly at the floor.

The muffled voices of his brothers drifted up from downstairs—playful bickering, the occasional burst of laughter. Normally, that noise surrounded him. Tonight, it felt far away.

Overwhelmed, he stood and slowly walked toward the sliding closet door. With a quiet breath, he opened it and stepped inside. It was cramped—lined with dusty boxes, old blankets, and forgotten trinkets—but it was private. It was still.

Haruto sat down, pulled the door shut, and clicked on a small flashlight. The gentle beam cast long shadows over his face as he stared down at his trembling hands. Soft blue sparks flickered faintly between his fingers—quiet, contained, but impossible to ignore.

Haruto (murmuring): Why did I do it...?

His voice trembled, barely above a whisper.

Haruto (softly): I promised I wouldn't use my powers unless I absolutely had to. Was that really worth it?

His mind replayed the moment from earlier. The tambourine slipping from his grip. The gasp from the crowd. The instant his instincts took over—eyes widening, fingers twitching, time halting. In the space of three blinks, the world froze. People mid-applause. Karamatsu frozen mid-strum. The tambourine floating in mid-air, waiting to fall.

Only it never did.

He had caught it. Fixed his stance. Rewound the moment by a second. And no one had noticed. But inside... he felt it.

Haruto (quietly): I can't keep doing this. Pretending to be normal... pretending to be like them.

His fingers curled into fists. The sparks died away. But something else pulsed just beneath the surface—deeper, darker.

He pressed a hand against his chest. The faint black glow beneath his shirt responded, slow and cold like a second heartbeat. His psychic core. His Black Heart. The source of his power... and the very thing that kept him apart.

A painful truth rose to his lips, but he said it anyway.

Haruto (bitterly): I wanted a family... not another secret to hide.

He leaned his head back against the closet wall. The silence weighed on him, pressing into his chest, making the small space feel even tighter. His eyes closed, the exhaustion catching up to him.

Then—footsteps.

Soft, light steps stopping right outside the closet door.

The sliding panel creaked open, and light from the bedroom spilled in. Osomatsu leaned into the doorway, grinning like always.

Osomatsu (grinning): Haruto, what are you doing in here? Planning your grand escape?

Haruto jerked upright slightly, startled but keeping his tone calm.

Haruto (nervous): I just... needed a quiet place. That's all.

Osomatsu crouched down, elbows resting on his knees. Surprisingly, he didn't tease—just observed with a curious smile.

Osomatsu (casual): Quiet, huh? Yeah, I get that. This house can be a madhouse. But hiding in the closet? Even I don't do that. And I once hid in the washing machine to avoid chores.

Haruto (sighing): It was the only place I figured no one would bother me.

Osomatsu (grinning): Well, almost no one.

He leaned back on his heels, letting out a slow breath before softening his voice.

Osomatsu (gentle): You don't have to hide, Haruto. You're part of us now. Sure, we're loud, dumb, and extremely good at being annoying—but we're still family.

Haruto looked at him, his expression guarded.

Haruto (hesitant): Is that what this is? Family? Sometimes it just feels like I'm the odd one out.

The words slipped out, and silence followed. Osomatsu didn't respond right away. He rubbed the back of his neck, eyes drifting away in thought.

Osomatsu (serious): I get it. We've been together since birth—same school, same room, same everything. We're basically a storm that never stops. Then you showed up. And yeah, it's weird. For you. For us too. But weird doesn't mean bad.

Haruto stared at him.

Osomatsu (warmly): You're one of us. You're stuck with us now. Like it or not.

The corner of Haruto's mouth tugged upward.

Haruto (softly): You're impossible.

Osomatsu (grinning): Damn right. That's why I'm the oldest. Now get outta that closet before I drag you down by your ankles.

He stood, brushing off his pants like it was the most important thing in the world.

Osomatsu (cheerful): Snacks are waiting. Come downstairs, Haruto. There's soda with your name on it.

With a wink, he slid the door closed behind him.

Haruto sat for another moment in the quiet. The faint glow beneath his hand pulsed once—softer this time. Calmer.

He looked toward the door, eyes thoughtful.

Haruto (whispering): Maybe... I can make this work.

He stood, stretching slowly, and stepped out of the closet. The voices downstairs were loud again, chaotic as ever.

End Of Chapter 11

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