Uchiha Hiko's guess about Shui Lingboyang had only just begun to take shape. He felt that if Shui Lingboyang ever treated her people poorly, some serious illness might develop within her body.
That was merely one of his thoughts. Uchiha Hiko had another thought about this matter: there was still a seal within her body. If that seal was not undone, the toxins in her body would only grow more severe.
The toxins within Shui Lingboyang's body had actually been caused by Uchiha Hiko's carelessness. When he had first fought the wild beasts, he had not considered so much. Thus, when he had made them consume those lingzhi mushrooms, some of his power had seeped into them.
But unexpectedly, after the beasts consumed all that spiritual power, the toxins within them could slowly invade Shui Lingboyang's body. Shui Lingboyang had never noticed any of this.
Yet by the time Uchiha Hiko discovered everything as he was leaving, it was already too late. He could only see whether some of his other abilities could later eliminate those toxins from her body.
If his abilities could not eliminate the many toxins in her body, then only her nickname could step in and help her resolve these problems.
However, he had not told Shui Lingboyang the whole truth because he feared that she would be under too much pressure over it, so he had kept it hidden and said nothing.
If he told Shui Lingboyang the truth, her mind would become deeply troubled. How could she then fulfill her promise to Your Majesty the Queen and wipe out all those beasts?
Moreover, her position was still rather precarious. Although the Second Princess had already been eliminated and there was no longer any threat from behind—
That did not mean others would not compete