A Certain Scientific Railgun: Astral Buddy, Volume 4 (A Certain Scientific Railgun: Astral Buddy #20-30)

After taking out the ringleaders in the plot against the Shokuhou clique, Hokaze thought she might finally have a moment's peace... until Sogita Gunha appeared and challenged her to a fight. The difference in their strength is so stark, it's all Hokaze can do to defend against his attacks! Elsewhere, Mitsuari Ayu, the true mastermind, steadily advances her own plans. Full of hope and heart, this side story of A Certain Scientific Railgun comes to a close!