An Ancient Game of Tag

"An Ancient Game of Tag" (太古でカケッコ) is the one hundred and twenty-third chapter of the Seraph of the End: Vampire Reign manga series, written by Takaya Kagami and illustrated by Yamato Yamamoto.

Synopsis
Accessing a memory, Yu and Mika realize how far back in time they have reached from the late Cretaceous dinosaurs alive around them. Since they are his memories, Yu wonders if that means he must have been nearby. They spot Mikaela who lives as a seraph descend into the area. Mikaela draws a shadowy eye like entity from a lizard he is familiar with. Mikaela speaks to the eye that father is calling and flies away, Yu and Mika can only run after them.

After Yu gains energy from eating, Mika is able to assume his demon form where they are both able to reach the mountain with ash rising from it. Nearing the summit, a thin light appears from the crater. Mika motions for Yu to look where they discover what appears to be a civilisation made of ringed structures and towers. Throughout the air are seraphs, and floating black eyeball like beings. Yu and Mika see that this is bigger than they thought.

Characters
List of characters in order of appearance:


 * Yūichirō Hyakuya (also appears as a child while in a memory)
 * Mikaela Hyakuya (as a child while in a memory)
 * Mikaela (as memory)
 * Shikama Dōji (mentioned only)

Gallery
Manga panels provide a visual overview of the events of chapter 123 with depictions of the characters, Seraph of the End world and scenarios.