Akuma-kun

The era of demons has dawned, bringing with it a wave of darkness that threatens humanity's very existence. Dr. Faust, a wise but ailing scholar, has predicted this ominous rise, yet his frail condition prevents him from confronting the impending chaos himself. Instead, he places his hopes in a young boy named Shingo Yamada, whose destiny is marked by a unique birthmark on his forehead—an emblem that identifies him as the chosen warrior against this malevolent force.

To aid Shingo in his daunting quest, Faust calls forth an unlikely ally from the depths of hell: Mephisto, a devil with a decidedly detached attitude. Bound by a blood pact, the two embark on a perilous journey to combat the supernatural threats that plague the world. As they navigate this treacherous landscape, Shingo must rise to the challenge, embracing his role as humanity's defender alongside his reluctant demonic companion.