---Day with Puro-IV---
During the journey on the Mana Train, even before the incident with the Army of Undead Monsters, Vier was able to train her new pet slime, Puro-IV, to understand human's words or, at least, Vier's words.
Different form Puro-III, Vier's previous pet slime, Puro-IV doesn't excel in Regeneration Skill. Puro-IV can heal itself and regenerate like all Slime Monsters, but Puro-IV can't heal Vier with its Regeneration Skill
Unlike what Puro-III did with Vier's injuries during the Black Weretiger Monster Incident, Puro-IV can't even heal Vier's burns during the attack of the Skull Dragon Monster.
However, Puro-IV has a much larger storage capacity of around 3-meters cube compared to 1-meter cube that is the usual Storage Skill of Slime Monsters.
