Remember the whole thing started because rat bastard ran. The Baddie is older than the MC since she was at marriable age before the whole thing started.
I just hope he drank the potassium. But yeah silly for 3 potions if they wanted to hand waive would have been easier to just have 1 bottle with a mix than the PNK bottles. Although is that a translation/redraw or was that what they were?
That staff has an interesting design. As someone once said anything is can be a butt plug if you are brave enough and willing to deal with the consequences.
That biology professor is probably the type to really love magical beasts and probably got the wounds/scars from invading their personal space too much.
It feels more and more like the entity within the blade feels remorse for what was done with it and he is really enjoying the big family uncle he became.