"Weapon bonds are bonds formed between man and weapon, arising when the two unite as one in the battlefield after causing immense bloodshed. Due to this, only those who have spent a long time with their weapon in the battlefield, or those who have wreaked havoc with their weapon and caused a massacre in the battlefield have a high chance of awakening a weapon bond."
'Huh.' Deciding to focus on answering his question involving Sana's peculiar ability first, Valyr read through the book's introduction on what weapon bonds were, noticing that the second method given by the definition was quite similar to the method he used to awaken the weapon bond between him and his spear in the first place.