Seraph of the End: Guren Ichinose: Catastrophe at Sixteen (Book 2) is the second book of the Seraph of the End: Guren Ichinose: Catastrophe at Sixteen light novel series which includes Guren's past with Mahiru and his encounter with many characters of the manga sequel, Seraph of the End: Vampire Reign.
It makes up the second half of the first English omnibus.
Prologue - A Servant's LoveEdit
Sayuri remembers seeing Guren crying after being severely beaten by the Hiragi Clan and having Mahiru taken away from him. After he apologizes for showing such a sorry state, he flashes an embarrassed smile at her, and she falls in love with him. Ten years later, she is still just as in love with him.
Chapter 1 - Waiting to PounceEdit
Mito tries to train Guren on fighting and Norito tries to comfort him. Shinya reveals what the Hiragi Clan knows, and Kureto Hiragi watches them from above.
Chapter 2 - Shinoa HīragiEdit
Guren encounters Shinoa Hiragi, who delivers a message to him from Mahiru. When Mikaela and Akane Hyakuya arrive, Shinoa pretends that Guren is a pervert, and Mika moves to protect her and threatens to call the police on Guren before Guren scampers off.
Chapter 3 - The Student Council President's SummonEdit
Shinya, Mito, Norito, and Guren leave to continue their examinations in the gym. When Guren arrives for his bout, Kureto questions him about the Thousand Nights and then attacks him with the intent to kill, forcing Guren to fight seriously.
Chapter 4 - Questions and AnswersEdit
Under torture, Guren reveals that the Thousand Nights contacted him. Under the threat of having the entire Ichinose Clan destroyed, Guren agrees to become Kureto’s underling.
Chapter 5 - Guren Plays HookyEdit
Guren learns that something involving the Thousand Nights is occurring at the Ueno Zoo. He returns to school and learns that rumors spread about him being Kureto’s lackey. Seishiro confronts him.
Chapter 6 - The SquadEdit
Guren, Shinya, Mito, Norito, Sayuri, and Shigure report to Kureto’s office, where Aoi Sangu lets them in. Kureto orders them to investigate Ueno Zoo. Guren leads this new team.
Chapter 7 - Deathmatch at the ZooEdit
The squad enters Ueno Zoo and battles a chimera made with genes from the Four Horsemen of John. Mahiru lends Guren cursed gear, which takes him one step away from humanity and causes a demon to sprout inside him. Ferid Bathory out-matches them without any effort and takes half of the chimera with him.
Epilogue - Sayuri's LoveEdit
Guren wakes up after being in a coma for one month, and Sayuri confesses her love to him. Ten days later, he returns to school.
List of characters in order of appearance: