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

The night after the celebration, Haruto sat alone in his penthouse, staring at the city skyline. The lights flickered like dying stars, but his mind was elsewhere.

His real father. The man who abandoned him. The man who had been watching from the shadows, waiting for the right moment to call him back.

If he thinks I'll come running just because he summoned me… he's a fool.

But Haruto knew better than to ignore a threat. He needed information. He needed leverage.

He pulled out his phone and dialed.

A sleepy voice answered. "Damn, Haruto. It's late."

"Find everything on him," Haruto said, his voice calm but sharp. "My father. His businesses. His allies. His enemies. I want to know who he trusts and who wants him dead."

There was a brief silence before Takashi chuckled. "Oh? The great Haruto finally cares about family matters?"

"Not family," he corrected. "A war."

The Next Day – A New Transfer Student

Morning came, and Haruto arrived at school with his usual cold charisma. Hemari was by his side, holding his hand.

The whispers followed them. The kiss at the party had made them the center of every rumor. Some people gossiped. Some girls watched him with admiration, others with jealousy.

A teacher stepped in. "Class, we have a new transfer student."

Haruto barely glanced up—until he heard the name.

Haruto's golden eyes finally met the boy standing at the front of the class.

A sharp suit. Cold, calculating eyes.

Haruto leaned back in his seat, his interest piqued.

Kirisaki walked past the students, but when he reached Haruto, he paused, glancing down at him.

Then, in a voice low enough that only Haruto could hear—

"If you don't go to your father willingly… I'll make you."

The entire class was oblivious, chatting amongst themselves. But Haruto?

A predator meeting another predator.

Chapter 30 – The War Begins