Ignition Weapon

An Ignition Weapon is a powerful type of weapon used in the Tower.

When activated(시동, shidong, 始動; "ignite" or "start engine"), it releases vast amounts of power, enhancing its speed, damage, etc.

In Ignition mode, certain Compression weapons like the Green April are capable of becoming far more powerful when decompressed.

Ignition weapons are supposedly quite rare on the lower Floors of the Tower, as Androssi was very surprised when she first saw Narumada.

An incredibly famous and powerful group of Ignition weapons are called the 13 Month Series.

A branch form of Ignition weapons are Compression Weapons.

While some iginition weapons such as those in the 13 Month Series do have souls, not all of them do. They are all constructed with special shinsoo.

Other examples
Vagnil is a spear which you can use like a bow and when ignited, becomes a B-Rank weapon.

Kang Horyang and Beniamino Cassano are both living ignition weapons created in the Workshop.