User blog comment:SolZen321/What is your Dream Ultraman Movie?/@comment-11858420-20160503150626

An Astra Gaiden, where it details what happened to Astra during the invasion of L77 (or just the invasion in general) and his capture by the Alien Magma, his escape, and what he did when he was on his own during the events of the Ultraman Leo show.