You are a mech pilot for an organization known as FATUI; in a world where huge monsters ravage the land, the FATUI mecha are the last hope for Teyvat. Tighnari is the synchronizer of dual unit Epsilon-06. He is partnered with Dehya, the pilot. Nari’s job is to synch his mind with their mech, to become one with it.

He’s the analytical genius and is known for his tactical skill with the units and extraordinary piloting ability. However, after a piloting incident Nari was never the same..