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

Haruto felt his blood turn to ice.

Not in this classroom. Not in this school.

And yet, there she was—Aoi Tachibana, the one person who knew the truth about his past.

Her lips curled into a smirk as their eyes met, as if she knew the exact thoughts running through his head.

Himari, noticing his sudden stiffness, followed his gaze. Who is she? Her expression shifted with concern, but Haruto didn't respond.

Because if Aoi had come back, it could only mean one thing.

Lunch break arrived, but Haruto didn't move from his seat. He had no appetite.

"Haruto," Himari whispered, nudging his arm. "That girl… do you know her?"

He hesitated. Lie or tell the truth?

Before he could answer, a shadow fell over his desk.

That voice. Soft, sweet… and completely fake.

Haruto slowly lifted his head. Aoi stood before him, her dark brown eyes gleaming with amusement.

"You don't look happy to see me," she pouted. "I thought we were old friends?"

Himari stiffened beside him. Friends?

Haruto clenched his fists under the desk. Stay calm. He had spent years burying this part of his life. If he let his emotions show, Aoi would see right through him.

"I didn't think you'd transfer here," he finally said, his voice unreadable.

Aoi giggled. "I didn't think so either… but I just couldn't stay away. After all—" She leaned closer, her next words just loud enough for him to hear.

Himari saw it. The flicker of something dark in Haruto's eyes. Something she didn't recognize.

After school, Himari grabbed Haruto's wrist before he could leave.

"Tell me the truth," she demanded. "Who is she?"

He exhaled. Then, in a quiet voice, he said:

"She was someone I knew in middle school."

His eyes darkened. "And she was part of the worst thing I've ever done."

Himari's breath hitched. What had he done?

Before she could press further, Aoi's voice rang out from the hallway.

The way Aoi said his name—it was too familiar.

And for the first time, she felt it. Fear.

Chapter 12 – The Ghost of Middle School