Ookami Kodomo no Ame to Yuki, Tokyo Ghoul √A Recommendations
The pacing and the setting is completely different; however, the main idea is similar. In Tokyo Ghoul, Kaneki struggles to find who he truly is: human or ghoul. In Ookami Kodomo, the two children, Ame and Yuki struggle to figure out their identity.
They both have great art, soundtrack, and story.
If you are still having chills up your spine after watching an intense series like Tokyo Ghoul, I recommend watching this to calm down