Thanks for the chapter!
Yes, it's the first lesson in the magic of the school of hard knocks. The plank has magic formula imbedded in it to encourage the memorization and understanding of basic spells by beating the learner over the head with it! However, must use according to directions especially in terms of how much force to use. Side effects may include loss memory, head trauma, skin bursting, bleeding, brain damage, death, death like symptoms and migraines. But don't worry it's perfectly safe when used properly!
Btw, if I remember correctly Umami is Japanese for deliciousness, right?
@MatiLublin He's showing he trusts her. She's trusting him a lot by letting him stay
in her home and eat her food. She didn't know he'd do such a bang up job with the repairs. Besides, lying about it isn't going to earn him any points and it's not like there's a wall outlet to recharge the thing. Although lightning magic might work if can avoid blowing up the battery by overcharging. In any case, he can't learn anything or be helped by her if a certain amount of trust and truth isn't given. If he told her was able to kill the tiger in attack but left out can't do it again she might think he's able to defend himself and warn him to be careful of monster x in such and such area without realizing he's a sitting duck who can't defend himself from it.