"No! I must get you these potions... Because I am the one that makes you injured like this." Miya said that as it seems like she insisted on getting the restoration potions.
What Miya said was kinda right, because if she doesn't drag me into investigating the vampire in the sewer, I probably wouldn't get injured like this at all.
But I couldn't entirely blame Miya alone. As part of it was my fault, to begin with... If I just wait patiently for help to arrive, for sure I wouldn't get attacked by the giant roaches at all.
Plus, I should have realized much sooner that there's no way I could beat the giant roaches on my own. I'm simply too weak against many of them. So I should just put my ego aside and ask for help from Shiki.
For sure Shiki would be there to protect me and thus I would have taken the hit from one of the giant roaches at all.