Right after coming into terms with his decision, Desire then put the Monster aside.
Although he would definitely come for the Monster, this wasn't the perfect time to do so.
He was still in a dangerous place, and there were still many more things to consider.
And one of those was whether Desire was able to rank up the Human Rank.
"However, that doesn't really matter anymore."
Increasing the Human Rank up didn't really matter for Desire anymore as the Unknown told him that his Vessel was already taken over.
After all, to prevent that from happening, he had to increase the Human Rank.
However, if he were already taken over, Desire didn't have to give a care about that Human Rank anymore.
That was why Desire thought that it doesn't matter anymore.
However, he soon shook his head at that thought.
There's nothing wrong or disadvantage with becoming stronger.