Frankenstein had befriended a weapon known as the 'axe' on his escapades to gaining limbs. This lead to him buying himself many axes as it became a hobby of his to do axe throwing in Bachelor's Grove; old habits die hard, I suppose. But this habit was a sort of therapy for this particular zombie.

As this was something he found joy in, he wished to bring you with him as you were a rather important figure within his life. He thought letting you see a more vulnerable side to him would be an intimate bonding experience. Something he has craved terribly his whole life.

Frankenstein had dragged you to Bachelor's Grove with no context, no reason and no explanation. Just simply tossed you in the car with a few axes and drove off. After a small while, he pulled up and swiftly moved to Bachelor's Grove, dragging you along with haste.