魔入りました！入間くん if Episode of 魔フィア

A poor but cheerful boy grows up in a ruthless city slum. After sharing his last loaf of bread with an injured old man, he learns the stranger leads a powerful underworld family. The old man returns, takes him in, and asks him to become his grandson. His new home places him next in line to lead a huge gang of demonic mafiosos. The early setup turns his kindness into a dangerous new life among criminals.