Akuma-kun (ONA)

Ten-year-old Ichiro Umegaki, a brilliant but reclusive boy, finds his quiet life upended when he's adopted by Dr. Faust. This eccentric benefactor reveals a hidden world swirling beneath Tokyo's familiar streets – a realm where demons and angels clash, and ancient evils stir. Soon, Ichiro, now dubbed Akuma-kun, is thrust into the role of a supernatural detective, tasked with solving otherworldly mysteries that threaten to spill into the human world. Alongside his perpetually hungry demon companion, Mephisto II, Akuma-kun navigates a dangerous landscape of occult conspiracies and monstrous adversaries. His sharp intellect and Dr. Faust's arcane knowledge are their only weapons against the encroaching darkness. Prepare for a thrilling adventure where contemporary fantasy meets classic detective work, as this unlikely duo strives to maintain the delicate balance between good and evil.

✦ AI-drafted summary