Sword Kill

Sword Kill (ソード・キル) is the Quirk used by the Serpenters brothers.

Description
Sword Kill allows the user to create flexible swords from their arms and shoulders, that fold in and out like an accordion.

When their Quirk is boosted by Trigger, the Serpenters can produce up to six swords, including from their mouths, and their faces become more sinister and snake-like.