Shouldn't he be hiding the fact that he can use magic because the ritual ended with him being a "Saint" even tho the goddess never gave him holy powers? I'm kinda confused
I guess or he forgot or he just don't care anymore, but I think it was pure instinct, since he almost got stabbed in the face and even if the guy wasn't going to hit him, the mc wouldn't know about it, so wasn't purposely.
Chapter 35, according to saintes it will gradually appear tha mana vesel and holy power will apear the saintess did take a week to manifest holy power so its not that surprising for him to still have magic when its only a day after the ceremony.
Or it could be that with all his magic it could just be cut in half and be the rest in holy power, but with the title saying that he isn't a saint but a doctor hes probably never gonna get holy powers and faking them instead
Given that he doesn't retain mana internally, but instead channels it, as long as the holy power vessels allow him to channel mana, even if he can't store it then he'll still be able to utilize it.
