Noragami Volume 02: 02/20/16
Noragami Volume 2 by Adachitoka focuses on the troubled past of Yukine / Sekki and his on-going conflicted feelings. Hiyori meanwhile is trying to hold everything together, having set aside her own desire to have her problem fixed.
Yato is still trying to gain followers but he can't if Sekki is hurting. A god and his vessel are linked. Sekki's transgressions directly affect Yato. Behind Sekki's bad behavior is a tragic story of bullying and death, one that is frighteningly familiar to the bad mojo affecting the city and preying on the local schools.
By Volume 2 the anime and manga pretty much split ways. The anime is much cheerier than the manga. There's more examination into the toxicity of group dynamics especially in the form of bullying and hazing. As this is a paranormal manga, the reason behind these toxic situations is something otherworldly.