Prologue:
Well, maybe taunting the being who had granted him his powers was not the best choice, but in his defense, the old man was asking for it. I mean, 'Louisa Ferre'? Both obvious and corny. And why look like a teenage girl? What was the point. Lucifer didn't even really do anything in that world; he just showed up a few times and spouted off more of his cryptic gibberish.
Still, timing could have been better. It was during another of those strategy meetings the old man held every few decades or so. Bringing up his little gender-bending jaunt through Antarctica (with pictures) was bad enough, but Beelzebub was definitely laughing and Mara was...wriggling? Or whatever Mara did that passed for laughter while in that form.
One reality-shattering spell later and Lucifer was tossing him head first into the vast depths of the Amala Network. Was the look on the old man's face worth it? Hell yes. Pun intended. However, staring out at a multitude of shifting corridors leading to what he guessed were portals to other worlds made him think he had overdone it a bit.
Some phrase involving hindsight came to mind. Whatever. The old man would bring him back when he was needed. Until then, he had time to kill. Demon immortality and all that. And if push came to shove, he could probably rip open a path through Amala Network and use that to meet back up with the others. The old man probably thought this would be a good way to keep him out from underfoot (and away from any further blackmail material).
Whatever the case, he focused his energies and woke Masakados from its slumber. Although he was strong on his own, it made things simpler when he used his magatama in combat. He had actually wrangled the method of creating dormant 'blank' magatama out of Lucifer but had no real need to create any. The benefits of Masakados were so great that he had actually consumed the other 24 magatama long ago with no regrets.
It was the perfect way to increase his strength and master the skills inherent to each magatama, but the taste...eugh. The results were interesting. Being able to call upon a multitude of skills was vastly superior compared to how he was during the Conception, but the sheer number of weaknesses, strengths, and immunities had altered his body. Masakados originally could repel anything but Almighty spells like Megido, but since his body modification, he could only void the other elements. And Megido still burns like nothing else.
Sighing as he remembered Lucifer's reaction to that little stunt, he turned and started walking down a random corridor. He could have some fun with these other worlds while the old man sulked and tried to recover his dignity. The Harlot had mentioned that it took several millenia before he got over is first unsuccessful rebellion. Hopefully, it wouldn't take that long for him to get over a little harmless fun.
It might be a while before Lucifer would call him back. Staring out at the multiple doors lining each corridor, he grinned. Well, at least this would alleviate his boredom.
A/N:
Yep, here's another one. I actually plan on making this a series of stand-alone one shots. I will be hitting multiple crossovers, some more than once, and not in any particular order. Generally, these will involve our teenager-turned-demon spouting cryptic comments, trolling heroes, and being a pest. Sort of like Fate/Stay Night's Zelretch only younger and with less facial hair.