Green April

The Green April (초록 사월, Chorok Sawol; "Green Fourth Moon") is a weapon of the 13 month series. It is introduced in the series in the possesion of Anak Zahard, but it eventually comes into the possession of Yuri. It is a long, hook-like weapon that can change its shape like a liquid when Ignited. Its original form has only been glimpsed, it has sharp teeth and short, wavy hair. It might be human, non-human or even demonic. The weapon's personality is not known, as its form has been seen so little. It seems quite sadistic, and enjoys being used in combat.

The Green April is a 7B-Rank Hook, which most likely becomes A-Rank when ignited. It is also a Compression Weapon and when ignited, could turn a place into "a massive forest".