Colossal Dominion: Ruka's Ascent

Chapter 1: The Weight of Divinity

I never asked to be a god. The world was already a fractured mess—war, greed, and despair clawing at every corner of humanity—when the heavens split open and a voice, ancient and unyielding, declared me a Peacekeeper. Me, Kanata Ruka, a trembling middle schooler who couldn’t even stand up to bullies in the schoolyard. Now, I’m 1,500 kilometers tall, a colossus whose every step reshapes the earth, whose breath stirs storms across entire regions. Honshu, my home, lies beneath me like a fragile toy, and I’m supposed to govern it, to bring order within a year. But how can I, when my heart still quivers like a child’s, clinging to the only anchor I have left—my Onii-chan, Tenichi?

I stand in the Pacific, the ocean barely lapping at my calves, the water cool against my skin as I gaze down at the speck of land that was once my everything. My body, once so small and insignificant, is now a landscape of its own—curves and valleys that could house entire cities. My school uniform, miraculously scaled to fit, clings to me like a second skin, the fabric straining against the sheer enormity of my form. I feel the weight of it all, not just in my bones, but in the way my chest tightens with every breath, my mind a storm of doubt and fear. And yet, there’s something else too—a heat, a pulse deep within me, stirred by the power, by the way the world trembles beneath me. It’s intoxicating, and it terrifies me.

‘Ruka-chan, you okay up there?’ Tenichi’s voice crackles through the tiny earpiece I’ve fashioned for him, a lifeline to my humanity. He’s perched on the ridge of my collarbone, a speck against the vast expanse of my skin, his presence both a comfort and a maddening distraction. I can feel the faint tickle of his movements, the warmth of his tiny body, and it sends a shiver down my spine that I can’t quite suppress.

‘I... I don’t know, Onii-chan,’ I murmur, my voice a low rumble that echoes across the horizon, shaking the clouds. ‘This is too much. I’m too much. What if I hurt someone? What if I hurt you?’ My fingers twitch, itching to pluck him from my shoulder and cradle him closer, somewhere safer, somewhere more... intimate. The thought alone makes my cheeks burn, a heat that spreads lower, pooling in places I dare not name even to myself.

‘Hey, don’t talk like that,’ he snaps, his tone sharp but laced with that familiar warmth I’ve always leaned on. ‘You’re still my little sister, giant or not. I’m not going anywhere, got it? Though, uh... could you maybe not shift so much? I’m trying not to fall into... well, you know.’ His voice dips, awkward and flustered, and I can’t help but smirk despite myself. He’s referring to the deep valley of my cleavage, a chasm that could swallow entire towns, where I’ve caught him glancing more than once. Not that I blame him—how could anyone not stare at something so impossibly vast?

‘Sorry, Onii-chan,’ I tease, my voice a sultry purr that I don’t entirely mean to let slip. ‘But you’re the one who insisted on staying so close. Don’t tell me you’re getting... distracted?’ I tilt my head just enough to send a cascade of my raven hair tumbling down, a curtain of black silk that could blanket a city, and I hear him curse under his breath.

‘Ruka, don’t start with me,’ he growls, but there’s a hitch in his voice, a crack that betrays him. ‘I’m just trying to keep you grounded, alright? Not get lost in... whatever this is.’ He gestures vaguely—I can feel the tiny motion against my skin—and I bite my lip, a gesture that could crush mountains if I weren’t careful. The heat in me grows, a forbidden ache that I shouldn’t feel, not for him, not like this. But the power, the scale, it’s doing things to me, twisting my thoughts into something darker, hungrier.

‘Maybe I want you lost,’ I whisper, the words slipping out before I can stop them, my breath a gust that could topple forests. I shift my shoulder just slightly, nudging him closer to that dangerous edge, and I feel the tiniest gasp from him, a sound that sends a jolt straight through me, making me wet with a need I can’t name. My body, this colossal, untouchable thing, is suddenly alive with want, my skin prickling as if his mere presence could ignite me. I want to feel him, all of him, against me, in ways that defy our bond, that defy everything I’ve ever known.

‘Ruka, stop,’ he says, but his voice is strained, almost pleading, and I can hear the conflict in it, the same storm that rages in me. ‘We can’t—damn it, you’re making this hard.’

‘Hard, huh?’ I quip, unable to resist, my tone dripping with mischief as I imagine just how hard I could make things for him. The thought alone has me panting softly, my breaths stirring the air into a frenzy, and I know he can feel the heat radiating from me, the sheer, overwhelming desire that threatens to consume us both.

I lower my hand, a vast platform that could cradle entire lakes, and gently nudge him closer to my chest, the fabric of my uniform taut over the swell of my breasts. His protests are faint now, drowned out by the thunder of my heartbeat, and I can feel him trembling against me, a tiny spark against the inferno of my skin. The world below fades, the weight of my duty forgotten, as I focus on this moment, on the forbidden edge we’re teetering on. I want more, need more, and as my fingers curl ever so slightly, guiding him toward that dripping, aching heat I can no longer ignore, I know there’s no turning back.