If you're looking for manga similar to Alcbane, you might like these titles.
Pandora's Box to control disaster and hope ... those who can handle this are only two boys and Pinkeye, a boy aiming for world conquest and a dangerous serial killer. Is it saving or destruction that they bring to mankind?
A side story of showa era Ultramen before they came to Earth for their respective series.
Tezuka himself is a main character in this one, about a manga-ka who finds himself in a science fiction story about robots and transforming creatures.
In the far distant future, hideous monsters roam the Earth, threatening the lives of all people. Genma, the evil ruler of the Mah tribe, has become obsessed with fathering an Heir. Convinced that a child born of a Hito woman will have amazing powers, he sets his sights on a young Hito woman. In exchange for her village's safety, Non agree to bear Genma's child. She gives birth to twins and names them Loof and Jin. Jin is left for Non to raise among the Hito, as Loof is taken to Genma, and raised to be the prince of the Mah tribe. Although Loof and Jin live in two separate worlds, their fates soon become intertwined as Loof is banished from Mah tribe once he appears to possess more human than wizard physical characteristics.