Green April (Weapon) (초록 사월, 草綠 四月, Chorok Sawol; "Green Fourth Moon") is one of the 13 Month Series made by the blacksmith or crafts master, Ashul Edwaru. The weapon is sentient and has a girl spirit inside it. It was first owned by Anak Zahard's mother who was a Princess, then by Anak Zahard herself. The weapon is currently in the possession of Ha Yuri Zahard.
It is a Hook capable of elongating and as it's also a Compression Weapon; Ignition will decompress part or all of it. When Ignited, the Green April could turn a place into "a massive forest". The Green April is a 7B-rank Hook, which most likely becomes A-Rank when Ignited.