"Let me reiterate: from the moment this war began, I have never lost to my elder brother. Not once! Only those weak, powerless bodies have lost. As a being with infinite concepts, the only thing I lack is a body capable of bearing and wielding this power."
"Yes, I want to defeat my elder brother, the one called Eternity!"
"Unfortunately, as the loser, all I can do now is keep my head down. The body that bore my power has been utterly destroyed, my main consciousness is imprisoned, and nearly all my followers are dead. Now I can only wander through countless dimensions, slowly rebuilding my body under my brother's watchful eye."
"I am grateful for the wonders of the multiverse. There is still so much knowledge and mystery to uncover, and the potential of the Firstborn of the Gods is beyond imagination. Here, I will uncover their secrets before my detestable brother does. One day, I will make my brother and those fools who worship order understand that nothing in the entire multiverse can presume to be eternal!"
Note: A crossover, a nonhuman protagonist, and a semi-invincible story. The plot is adjusted or reimagined to some extent.
Fate/Zero (Complete) - A Certain Magical Index (Complete) - Campione! (Ongoing) - ???