Hi. I need help finding an anime I saw a long time ago.
I only remember bits and pieces of it, but I'll try to describe it the best I can.
From what I can remember, the boy is abducted by some aliens. He is later recovered by an organization on earth. The boy has on him a crystal (green i think) shaped kind of like a cross, and can use it to either transform or summon a robot armor suit onto him. The main weapon on the armor seems to be a green laser cannon that shoots from each of his shoulders. Here's the catch, everytime he uses this weapon the crystal cracks a bit. His lfe is threatened if the crystal shatters completely. The last episode I saw showed his sister (who was also abducted) appear. She also has a crystal (red) and armor, but is brainwashed into fighting against her brother.
this is the list of anime I know is not:
escaflowne, none of the gundams, evangelion.
any help would be much appreciated.
EDIT: I saw this anime on television; USA; maybe sometime 1994-1996