Danmaku

Summary
Danmaku is the ability to rain down multiple ranged attacks at the same time, filling the battlefield with projectiles, causing the attacks to be extremely hard to be dodged. The user can summon a stream of nearly endless waves of projectiles, ranging from hundreds to thousands to millions of objects like blades, bullets, energy blasts, etc., around their target to bombard them from all sides with no hope of escape. Users most likely have a complex strategy and pattern to confuse their opponent and limit their movement.

Users

 * Most characters from Touhou Project
 * Most characters from Undertale