[Soul Processing Technique].
A technique for transforming a "living being" into a controllable "component."
Viewing the soul as an information processor and behavioral controller—this was the mindset of a proper Wizard.
Having learned this Witchcraft, the first thing he thought of was upgrading his "Spider Slayer."
This second Core Witchcraft his mentor had taught him required the soul of a living creature as its raw material. According to his mentor, it was best to extract the soul while the creature was still alive. Extraction within ten minutes of death was also possible, but the results would be slightly inferior.
'If I could replace its core with one made from the soul of a true Magical Beast spider and upgrade its materials, its intelligence and combat abilities would definitely far surpass their current level.'
