Hello. I visit 2ch for the first time.
I am find an old anime.
Please help me find this.
I can't speak the japanese language.
So I'll speak some simple kewords.

Keywords : 月虹(or 月影)/少なくとも 10年前/月(clone? machine?) 破壊 → 地球 have 環/OVA or 短篇

お願い致します