Johnny_Sensei

Our Secret, Our Sin

Haruto’s life was supposed to be simple—just another forgettable high school student with a quiet past. But when his father suddenly remarries, he finds himself living under the same roof as Himari, his new stepsister… the one girl he could never forget.

She was his first love. His first regret. And now, his biggest temptation.

Forced to suppress their growing feelings, Haruto and Himari struggle to keep their relationship normal. But when a single mistake puts them in the crosshairs of Ryosuke, Haruto’s so-called "friend," their fragile secret is threatened. Ryosuke holds a photo—a single moment captured in time that could destroy everything.

But Ryosuke doesn’t know who Haruto really is.

Because Haruto has a past. A past so dark that if anyone uncovered it, his entire world would crumble.

As love and danger intertwine, Haruto must fight against the sins of his past, the desires of his present, and the uncertain future that looms ahead.

How far will he go to protect the one person he can’t live without?

And when the truth is revealed… will love be enough to survive?


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Our Secret, Our Sin

A Night That Shouldn't Have Happened

The room was silent except for the faint sound of breathing. The air between Haruto and Himari was thick with something unspoken—something dangerous.

Himari sat on the edge of the bed, clutching the blanket as if it could protect her from what she had just seen. Haruto, still catching his breath, looked at his fists. His knuckles were raw, bruised from what he had done to Ryosuke.

Not just into someone protective… but into someone terrifying.

"I thought that this form of you had vanished… that it would never come again," Himari whispered, her voice trembling. "I'm sorry for awakening this side of you."

Haruto's eyes darkened. For a long time, he said nothing. He had spent years burying his past—hiding the monster that had been born in middle school. But Ryosuke had forced his hand.

And the truth was, Haruto had enjoyed it.

"He came to know your true power," Himari continued. "If anyone finds out about your past—"

Haruto suddenly moved, grabbing her wrist. Not forcefully, but enough to make her eyes widen.

"Then what?" he asked, his voice dangerously low.

Himari's breath hitched. There was something different about him. He wasn't just her stepbrother. He wasn't just the boy she once loved.

Instead of pulling away, Himari found herself trapped in his gaze. He was too close, his fingers tracing over the skin of her wrist.

"Tell me the truth, Himari," Haruto murmured, his voice softer now. "Are you afraid of me?"

She swallowed. Her heart pounded against her ribs.

She should have said yes. She should have run. But instead, she whispered:

Something flickered in Haruto's eyes—something unreadable. For a brief moment, his grip tightened… before he let go.

"Then don't ask about my past again."

Himari bit her lip. But she couldn't ignore it.

Because for the first time, she was seeing the real Haruto.

And she wasn't sure if she loved him… or feared him.

A Past That Refuses to Stay Buried

The next day at school, something changed.

Ryosuke was gone. He hadn't shown up for class. The rumors spread fast—some said he was in the hospital, others whispered that he had run away.

Haruto didn't react. He simply sat at his desk, his expression unreadable.

But when he felt someone watching him, he turned his head.

A girl was staring at him from across the room. Not Himari. Not one of his classmates.

Chapter 11 – The Weight of the Past