86--Eighty-Six, Vol. 2 (light novel): Run Through the Battlefront (Start) — Asato Asato

Lena takes command of the Spearhead squadron from her post within San Magnolia's fortified First Sector. She and Shin fight on without ever seeing each other, buther attempts to forge a bond of trust are stymied by the walls of hatred between Alba and Colorata, as well as the literal fortified walls between the Republic's eighty-five Sectors and the front lines. With tempers flaring after a death on the battlefield, Lena is forced to confront her own ugly cowardice and will soon come to learn why Shin's previous handlers called him Reaper.