Heinz had just finished talking with Denise and learned that this young girl had obtained a being that he would surely love…
Unfortunately, because of the involved confidentiality agreement, Denise couldn't tell what it was. However, Denise also hinted that it was an existence equal to Immortals and Demon Saints, but they were more interesting in terms of being research subjects.
Anyway, Denise needed his expertise in bio-mechanical alchemy, but not many people were aware that Heinz was actually an expert in this as well. Aside from that, Denise also needed his skills in Runic Gearsmith and his Dark Mystic Artificer's talent.
Although Heinz wasn't that great compared to many other Dark Alchemists in these two subjects, the fact that he also had a deep knowledge about the human or Arcanist's body would surely set him apart.