"Everyone, please don't go far from the camp side. Things are not one hundred percent under control yet. Come back before nightfall."

A teacher does not tired announcing it through speaker at the end of the ceiling. He never tires of reminding all his beloved students, too bad not all students care. Some think their teacher is boring.

For them, the annual Himeji Higj School Summer Camp is sacred, where they unite with nature and form the most beautiful memories.

Hojo Ujimasa kicked a chair front of him. His oval face scowled at the speaker. The tall thin handsome young man with a bamboo-like body represented the feelings of majority students.

"Aki dobyou believe this shit? skipped Hosoka waterfall? He must be nuts. Man, you're coming, right?"

Akimitsu Yamazawa nodded, a hunky young man did not care much about that at the moment, he more interest on his smartphone, watching a news.

[A terrorist group called The Truth threatened to blow up the Saitama power plant, demanding Japanese government to return to fossil power plants rather than using a Blue Stone. 

The Truth says that the Blue Stone is the cause of the appearance of Neraka's Gate. They wanted humans to abandon Blue Stone and return to fossils.]

"That stupid organizaction lives in the stone age, man." Hojo said. "We have cheap and reliable electricity now, and they demand us to return to the old way? No way, man."

"But, I think they have a point " Himeko Itabaya, a slim girl with long black hair, leaning against Aki's arm. "But those pesky organisations scare me. Aki, you'll protect me, right?"

"I'm just a normal human, but yeah, I will try." Aki's blue eyes peered over his shoulder. The girl next him thinking Aki was different. As a Survivor, he indeed different, as heis physical strength was above the average of normal humans. But, he chose to do a normal live, just like other thousand survivors out there.

Hojo laughed. "That Aki way to said, fuck of girl, I'm not a super human to protect you."

"Shut it, jerk." She answered, with a boiled red face. "Aki will protect me, right Aki?"

"I said it, do I? I'll try. Rest assured." But he not sure. Even though he is known as a survivor, he is an average young man with good physical power. 

But the news had made Aki wary. "We'd better stay at the camp. Saitama power plant isn't far from here, right? What happens if they are serious about their threat?"

"Come on, man, even if the Saitama Alchemy Stone power plant is a hundred metres away, The Truth doesn't care about us. Aki, you'll regret it if you don't come. Those basketball girls brought mini bikinis with them. And Himeko wants to give you a special treat there."

"What treat? What treat?" Himeko blushed.

Aki's ears twitched, his heart beat raised. "Alright, but it's better to be discreet, don't get caught by the teachers." How could he miss a chance to see those girls in mini bikinis? It was a dream come true. If he lucky, sex in the wild would become their special memories of high school.

"Now that is my loyal friend." Hojo patted his shoulder, after he saw Aki noded on approval. 

Akimitsu Yamazaki, a 18 year old student, and member of the Himeji High School boys' basketball teams. His school opened a summer camp in the hilly area on the edge of Awa village, which is famous for its beautiful waterfall. Even though they are forbidden to go to the waterfall, the clamming of youth cannot be contained. Aki and fourteen students secretly go there. 

At the waterfall they played on the river bed, then laughter ensued. A thin white smoke soared on the blue sky, spreading a BBQ aroma. Many of them chose to disappear in pairs into dense forest or hide behind river boulders. What a lively atmosphere. 

Aki took off his jacket and track pants, wearing his favourite blue boxers. He declined an invitation from friends to play under a waterfall. He wasn't a kid anymore, who liked to play with water.

For a while he enjoyed the sight of girls playing volleyball in the river, until a girl approached her.

"Do you want to go there, to a quieter place?" She twisted head toward a rocky river area, far from the waterfall.

"Now?"

"Yes, we can chat alone there, if you want."

Aki agreed and they went behind a big natural river rock that hid them from the rest of the group. She leaned against river rock, facing Aki. They have a small chat then Aki begins to seduce, until they get closer and the skin of their stomachs touches.

Aki waited for this moment entire life. At last, he would let someone take his virginity. While he was about to kiss her, a helicopter passed by.

An engine sound breaks the atmosphere, trees dance with the wind, and leaves fall.

Aki noticed an Alchemia Corporation emblem on a helicopter, then another helicopter came. "Strange, why are there many helicopters passing by?"

"Aki, come on, let's keep going. I need you." Himeko pulled Aki's boxers closer, made a lustful face.

She make Aki boner hard. He gently kissed her as his hand undid her bikini shoulder straps, it fell smoothly on her white skin and his lips gently kissed her shoulder as he fingered her crotch.

She moaned as squished Aki' hair. "Aki, it felt good. Keep going."

Once again a helicopter flew by carrying a large container with the Alchemia Corporation logo. Not one, but three helicopters flew in tandem.

"Aki, don't worry about it," she said, "Let's have fun."

"Wait a minute." Aki headed to bushes, leaving her behind.

"Stupid boy, you ruined everything." She left for the BBQ, annoyed and frustrated by Aki. 

At the bush, Aki's presence startled Hojo and the girl who were in the middle of making love.

"Dammit Aki."

"Sorry, dude, passing by." Aki didn't care about them. He remembered that when his village was destroyed, it all started like this. Dozens of helicopters came and dozens of military trucks stormed.

Sure enough, in the village far distance, Aki saw the arrival of many military trucks. From containers carried by the helicopters, Alpanzer appeared, a two-legged frog-like war vehicle sized two story building, with gatling guns on the left and right sides. The pilot was at the top of it inside the cockpit. 

She heard a faint announcement from the summer camp. "All students are requested to return to the camp immediately. Leave all luggage behind, we're going back to Tokyo!"

Aki was sure all this was interconnected. Something big was going to happen.