Vinland Saga 5 by Makoto Yukimura

A Life Without Purpose.

After the assassination of King Sweyn and the execution of Askeladd, Thorfinn lost the object of his vengeance, his sense of purpose, and his freedom. Now a broken young man, he labors far from the battlefield, clearing a forest for his slave master’s farm alongside the amiable Einar. But a sudden and brutal tragedy will shock Thorfinn out of his apathy, and force him to answer the question, “Do I still want to live?”