First story yeah! :D I don't own One Piece or Highschool DxD

Monkey D. Luffy, Portgas D. Ace and Sabo were out "training" with their grandfather Monkey D. Garp . At the young age of 7 he was wearing a simple white T-shirt with an anchor on it, jean shorts, sandals and the strawhat he got from Shanks. Sabo was wearing a nice blue coat and white dress shirt, and top hat with goggles. No doubt old discarded clothes from a noble house that have seen better days. Ace with a bright red tank top and black shorts. The older man was carrying the boys in one hand holding them by the collar of their shirts. He was dressed simply in black pants and shoes with a bright colored floral print button down shirt. They where walking through the jungle on Mt. Corvo.

"Listen boys I'm going to make tough marines out of you even if it kills you." Garp spoke as he carelessly swong the boys around as he walked.

"Grandpa I've told you a million times that I don't want to be a marine, I want to be a pirate." replied luffy as he struggled against the older mans grip.

"Were going to be pirates that have adventures and freedom." Sabo argued as he to struggled against the hold on him.

"I'll beat some respect into those thick skulls of yours boys." The older man was casually cracking his knuckles in his other hand as a tick mark was growing on his head.

"Leave Luffy alone you big bully." struggled Ace sensing the tort- I mean training to come. As the older man flung the boys to the ground and ran towards them fist raised for a punch. Having quickly gotten up and turned around to see the terrifying demon that was their grandfather running at them and fearing the beating to come Luffy, Ace, and Sabo ran through the jungle screaming and crying in Luffys case. As they ran through the jungle trying to dodge the occasional punch from their fast approaching grandfather, their screaming attracted all the large predators of the jungle who thought they'd get an easy meal when they first saw the three small boys. Than they sweated when they saw Garp behind them and they too ran. This continued on for a few hours till exhausted Luffy collapsed. Ace and Sabo exhausted as well turned around to pick their brother up and make their escape but it was to late for by then standing before them was Garp. Garp quickly gave the boys a few large steaming bumps on their heads. After Garp had concluded that they've had enough tort- *ahem* I mean training the older man proceeded to roast the few animals that weren't lucky enough to escape earlier while he was chasing his grandsons.

It was well into evening with the sun setting as the they where eating their meals like ravenous gluttons. Each one using their hands to shovel food into their mouths. After they made quick work of the meal leaving only skeltons of the unfortunate large animals caught in their earlier chase. Patting their enlarged stomachs they all turned when they heard strange sounds coming off the coast. As they walked closer Luffy began to have sparkling stars in his eyes as Garp looked on with a neutral expression. Before them was a mass of swirling lights in a rainbow of collors.

"Wow what is that?" Sabo had a smile on his face as he looked at the swirling mass of lights mind racing with thoughts on the lights trying to come up with a plausible theory.

"Tch, whatever its probably just light reflections or something." The oldest boy scoffing at his brother's simple fasinations.

"No, I've heard about this before. These things appear randomly all over the world in the blue seas and the grandline. No one knows why. The navy has there top scentiest working on it, Vega, Vegite, ahh veggiepunk." said Garp as his fist met his palm proud that he remembered the name.

'Somehow I doubt that's his name.' thought the two older boys at there grandfather's inability to remember names or get them right.

"Veggiepunk has countless theories on how they work explaining them something about space distortion or time manipulation. But I fell asleep because it was boring." laughed the old vice admiral loudly. The oldest boys face faulting.

"So cool, their mystery lights." said the youngest as his eyes continued to have sparkling stars.

"No you idiot he just said there space time distortions!" screamed Ace with shark teeth annoyed at Luffys stupidity.

"Now now Ace." Sabo tried to calm the oldest down, having infinitly more patience and common sense than the other two.

"Luffy there not mystery lights." sighed his grandfather. "Their mystery portals." he beamed nodding at his own deduction as he continued. "People have gone through and only a few have come out with tales of far off places and otheir weird stuff." he said as he grabbed the oldest boys by their heads and started spinning his arm an evil glint in his eye. "This will be great practice for you all as marines." he bellowed as he carelessly flung the boys at the portal while punting Luffy into the air after them

"Ahhhhh." They all screamed as they were flown off the cliffside towards the portal at high speeds. Than disappearing through said portal. Their grandfathers loud boisterous laugh the last thing they heard as there vision started to darken.

Hey guys first story figured I'd give it a try see where it went. Let me know what you think comment and reveiw and ill answer any questions. The first few chapters will take place before canon with dxd and have Rias meeting ASL. After that though it'll take place during the six months Rayliegh left Luffy to train. I want to build a good base and have a strong foundation for rias friendship with luffy rather than 'ohh you dropped in from another place you seem strong lets be friends' or something like that.