In 2014, Hiroyuki Sawano initiated a distinctive vocal project named
"SawanoHiroyuki[nZk]." This venture marked a significant shift in his career, as
it allowed him to explore the vocal aspects of music composition more
extensively. One of the project's early highlights was the collaboration album
UnChild (2014) with Aimer, recognized as SawanoHiroyuki[nZk]. This collaboration
and subsequent releases under the project banner have become notable for their
use as themes in several popular anime series. These include &Z in 2015 for
Aldnoah.Zero, "X.U. ǀ scaPEGoat in 2015 for Seraph ...