|Manga Debut||Chapter 192|
The Sun Cartridge is one of the Sun Boxes that comprise Gokudera's Sistema C.A.I. It is the Sun Flame ammunition for the Flame Arrow. It comes in a form similar to a machine gun's ammunition belt. It fires several solid projectiles covered with Sun and Storm Flames in quick succession. The Activation property of the Sun Flames gives the projectiles an irregular acceleration that confuses the enemy, and the Disintegration property of the Storm Flames on the bullets deals extra damage.