People complaining about heal rank up, he learned the skill by passivly (basically by mistake) pushing some mana into the guy and kabis said something about skill suitablity earlier, clearly he's a god tier healer and that allows him to learn it stupid fast.
Other than that though this thing is dog shit tier. MC is dumb. Author is dumb. Guards are dumb. Friendly old man is super unfriendly actually (even though author wants him to seem friendly right?). Nurse is the only one working in that hospital it seems. Schoolgirl is a stalker that wont talk to him even though she ran up and grabbed him just fine earlier. Author cant decide if black market granny is nice or not and really FORCEs in backstory to make you expect him to go back. Author is forcing MC to think registering is good even though it's obviously super dumb to register in a system that measures your mana where only you can increase your mana (asking to get fucked much?). MC never questions kabis about what it is or if others have anything similar. MC never looks up things before acting, he's been fighting monsters for I don't remember how long as a support role and he was berating the hunters for not knowing shit, but the first time he goes out it turns out he didn't know anything about the most common shit tier monster.
I could prb go on but this really is complete shit tier.
Also is kalbis even female? I mean it prb is because MC is male, but it's not even a living creature right?