The sighting of the first sewer slime indicates that there might be a few of them nearby, as sewer slime does work together sometimes. At least that's what I learn inside the game...
But of course, I couldn't do anything as my weapon isn't suitable to fight this sewer slime. It's just way too short because my weapon is a dagger and it needs me to approach that thing if I want to land a hit. Doing so is dangerous since the monster could attack me, slime is a stretchable monster.
That's why I am leaving all of this to Miya because it's easy for her to annihilate the sewer slime using her magus. It only took one shot to do it. Seeing how easily Miya killed all of this sewer slime, I relink my EXP Share skill with Miya. So that I could get some EXP out of it.
I feel like I'm just using Miya here to get more EXP for myself but I consider this as my payment for participating in the investigation.