Things that Can be Forgiven, Things that Can't be Forgiven
Since Kokubogar needs serious repairs, Shirota resumes his previous assignment as tactical advisor to Dai-Guard ... although not everyone is happy to see him after his previous betrayal. Still, there is little time for bitterness when the Christmas party is only a few hours away. Meanwhile, the army announces that it will face the last Heterodyne on its own, but how many people will be injured due to their stubborn desire to keep Dai-Guard out of the picture?
Aired 28/12/1999EP 13 - Things that Can be Forgiven, Things that Can't be Forgiven
Dai-Guard
Thirteen years after their sudden disappearance, an alien race known as the Heterodyne resurface without warning. To combat the Heterodyne, three office workers from the 21st Century Security Corporation operate Dai-Guard - a giant robot no longer regarded as an oversized paperweight. Unfortunately, Dai-Guard is somewhat obsolete and in disrepair. It's a tough job, but salarymen can also save the world.
(Source: Anime News Network)