Rain

is a manga series by Takumi Yoshino with illustrations by Megumi Sumikawa. It is serialized in Comic Blade.

Plot
The small country Sunkwoll is in a tight spot because it's under attack of the great country Zarmine. But the general, Rain, who's reputed to be an exceptionally gifted swordsman, is against the war and won't enter the battle. But how is one supposed to wage a war like this anyway?