Alchemy is the second replacement function. It's not as important as the "Trade" function, but it was still useful, and Idan had plans related to this function, so he didn't have plans for a replacement anytime soon.
And the last function.
Beast Taming is the second "non-replaceable function".
If the Bloodline function changed their body, then this function changed and strengthened their soul.
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Beast Taming (+)
The Contracted Beast
* The First Constellation (Formed)
> 1 Star: "Formless Doppelganger"
> 2 Star: "Lava ??? Dragon (Platinum Rank)"
> 3 Star: "Pulsar (Platinum Rank)"
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"With our breakthrough to the Platinum rank, we can form a fourth star and sign a fourth contract," Idan mused.
New bloodlines and a new star—there were plenty of opportunities for improvement ahead of them.
