For those who are thinking whether to watch or not: this is an ova for an hour, in which the events of the first season are retold with small additions (mainly at the beginning and at the end)
Reagan, under the pretext of a book, forced us to watch a recap. The cunning Arasaka! I've already read this book for the entire first season, and this episode was a textbook textbook. (Season 1 in an abbreviated version)
You can watch it here, you need to click on watch online