Tokyo Ghoul: Starting from the Double Kamuy

Original title: Tokyo Ghoul: Starting from the Double Kamuy
Other names: Tokyo Ghoul, Double Kamui plus Susanoo
Tags: anime derivative, time travel, system, two-dimensional, single female lead, fan fiction, 1v1, no harem
Protagonist: Byakuya Uchiha, Izumi Takatsuki
Introduction: [Single female protagonist: Takatsuki Izumi (Yoshimura Eto)] + [Can open Susanoo]
[Starting from Chapter 170, there is a chapter called "Attack on Titan". If you don't like it, you can skip to Chapter 198.]
Uchiha Byakuya traveled to the world of "Tokyo Ghoul" and obtained the Mangekyō Sharingan Kamuy, and it is the "Double Kamuy"!