Knights of Sidonia, volume 4 — Tsutomu Nihei

A faction on the Sidonia that believes humanity's aggressive posture toward the Gauna is responsible for the extraterrestial behemoth's hostility desires to chart a seperate course. Hero Tanikaze and his middle-gendered friend Shinatose are both promoted while the scion of the Kunato family delves into dubious experiements in this installment of Vertical's premiere hard sci-fi manga series.