An anthology of Sword Art Online "what if" short stories by various authors and illustrators.

Kakyu, a former Japanese who was reincarnated as a low-level demon in hell, has acquired unparalleled strength over two thousand years. However, unexpectedly, he is exiled to another “different world,” liberated from the harsh underworld. Kakyu, who was enjoying his dream slow life, witnesses the village he owes everything to being attacked. Despite rushing to the scene, the village is annihilated. Picking up the only surviving baby, Alus, Kakyu resolves to raise Alus to become the happiest person in the world to repay the debt…!? Source: MU

Anthology of D.Gray-man doujinshi written by different artists. Pairings: Allen x Kanda, Kanda x Allen

Rodney, at a young age, has become the new lord of the Deder region—the kingdom’s northernmost frontier. However, what awaited him there was a hopeless hell of debt! In a desperate situation where even the prospect of repayment seemed impossible, he suddenly acquires "civilized knowledge from another world." Armed with modern knowledge, Rodney resolves to carve out a new future! A fantasy of territorial management and a come-from-behind victory, rising from the absolute rock bottom!