Danmaku

Danmaku (弾幕) is the Japanese word that literally means barrage, bullet hell, or curtain fire. In Kozanese context, it generally refers to any type of duel where one's main objective is to pelt their opponent with a series of laser-like bullets, but it is frequently associated with war. The word has gained additional media attention through its use by the Shintoist Province and Scarlet Devil of Team Crimson. The word is used frequently in The Grimoire of Flandre with or without military connotations. According to it, there are a set of rules including prohibitions on harming those not engaged in combat. In modern times, a person engaged in danmaku is generally referred to as a driller and the term is often translated in English as bullet hell, though this translation is controversial due to its reference to the occult.

Current usage
Danmaku has accrued both violent and non-violent meanings. Some conflicts that are or were fought with danmaku include:
 * Soviet-Kozan conflict (1975 - 1988)
 * Kozanese Civil War (2002 - present in-game time)