Haru's weapons

Haru's special power is Rave (also known as Holy Bring), but it's connected to the huge sword he carries, known as the Decaforce Sword, Ten Commandments, which he received from Shiba after learning that he was the new Rave Master. The Decaforce Sword (Ten Commandments) is named such because the main piece of Rave gives the sword the power to take on 9 other forms, while the original form was made by blacksmith Galein Musica.

The Main Piece of Rave powers up the Rave Master by giving:

Superhuman Strength, speed, agility, stamina, endurance and durability. Given enough time, it's possible that it can enhance these abilities even further as after months of being the Rave Master, Haru managed to defeat 1000 or more demons in one battle. When Haru punches while holding the main piece in his fist, it can cause explosions on impact.

The Rave of Conflict not only enhances Haru's physical attributes even further, but it also allows him and Plue to project forcefields. This Rave is said to be Plue's exclusive Rave.

The Rave of Knowledge provides Haru with warrior skills and techniques; if he is given a clue to something he can discover what it is easily. It also allows him to know, summon and use the 10 forms of the Ten Commandments sword.

The Rave of Destiny allows Haru to speak with Sage Pendragon who is a Prophet.

The Rave of Truth speaks the truth; it revealed that Haru, up till Chapter 238, was not the true Rave Master. This led to a dramatic duel with the previous Rave Master, Shiba.

Rave/Holy Bring are 5 mystical stones with holy powers. They were created by Resha Valentine, using the immense power of Etherion, to battle the evil powers of Dark Bring. Rave was meant for only one person to use, the Rave Master. Only the power that created it can fuse it together, and once that happens the true purpose and power of Rave will be revealed.