Seraph of the End 1: Guren Ichinose: Catastrophe at Sixteen

The first volume of the light novel series includes Glen's past with Mahiru and his encounter with many characters of the manga sequel, Owari no Seraph.

Prologue - About the Spring of this World
The prologue reflects back on Glen as he narrates how he thought everything was simple, how naive he was because of his happiness.

He was lying on the grass with Mahiru, they were holding hands. She had asked if they could get married in the future. His response was nothing until she asked if they could stay together forever. His immediate answer was no, with a reason of their titles in the world as she was the successor of the main house and he was just a child from a branch house. Mahiru didn't want to matter about it but Glen told her it did matter, which might have made her cry.

Mahiru's escorts came and found in disgust that she was with Glen, who was blamed in bringing her outside the house. It was then that Glen realized that Mahiru was indeed crying. She had told her escorted she didn't want to leave Glen, holding his hand tightly.

As Glen couldn't hear anymore, he found himself get beaten up by grownups. Mahiru tried to stop them but it was no use, they ignored her and began insulting and threatening to kill him. Glen looked at Mahiru whilst getting beaten up and thought to himself how she was the bright sun to his lowly treated life.

When Mahiru's last scream in plead to stop the beating, Glen had already fainted with the smell of blood as his last smell before his eyes closed. As Glen was unconscious, he began to think of his life. About his childhood and dreams that felt so simple to him. About how he didn't have enough power to obtain them.

At that moment, Glen came to full consciousness and looked up to see Mahiru being taken away. She was looking at him with tearful eyes and apologized to him repetitively. He extended his arm to reach out for her, seeing her as the sun and feeling guilt wash over him as he wasn't strong enough and felt at fault.

The prologue ends with the final words 'And then, tens years went by.'

Chapter 1 - Enrollment of a Hated One
Ten years have passed and Glen has finally been submitted into First Shibuya High School.

Characters
List of characters in order of appearance: