From Bandai Entertainment:
In his skyless cavern of a village Simon toils daily, drilling holes to expand his stifling little world until one day he makes an extraordinary discovery: a small glowing drill bit and the man-sized mech it activates. Before he can give it a second thought Simon's dragged into a plot to break through to the surface by the local gang leader Kamina,…
MORI Kotarou
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From DrMaster:
Meet Pam Akumachi, an energetic 13-year-old junior high student who has just turned into ...a little devil! One day, when Pam and her friends try to summon the "benign devil," the magic circle goes out of control and Pam is transported to a strange parallel world where angels and devils reside in an uneasy coexistence.