Shin Koihime Musou/Ryomou
Throws projectiles that cover fullscreen. Probably one of the best assists in the game, the items cause enough hitstun and blockstun to follow up. The drawback is that the start up is largely punishable, so Ryomou's assist is better used at larger ranges or as a combo/oki tool.
Character Specific Use:
Kannei: Her best assist, gives Kannei an option at fullscreen. This allows her get closer to zoners, lock the opponent down on block, and can even be used to extend her fatal combos.