@groudonvert
All of the spell of Toka has been said in English. Paralyze is not "Japanese". Poison is not Japanese. Sleep is not Japanese. Berserk is not Japanese. Dark is not Japanese.
In any case, while I agree on the principle, that a bodyguard COULD be helpful, but... right now, the story clearly made the elf girl USELESS. Did she even shield Toka once ? No. You can't beat the strongest squad, 5 people + humanity strongest + back up + dragons while your "bodyguard" is on the ground doing nothing and say "he needs a bodyguard".
Which begs the question : Why is the author has created the role of the bodyguard since he doesn't even implement it ?
I mean, he could have made the elf girl useful, at least once, let's say :
When the dragon starts to go away with Civit, Toka starts to say paralyze, Civit act on the first syllable, throw his spear, elf girl manages to parry it,
or
When the Skeleton King appear, instead of doing NOTHING, it could just attack them directly (as a monster is supposed to do), and then, she saved him/shield him so he can say "paralyze".
In any other anime, you would have stong opponent and strong monster going so fast, you would not be able to say "paralyze" before they get you, but, in this anime, strong opponent don't move.
Honestly, it was not hard to make the elf girl useful.
What I'm hoping is, the more people will learn about Toka, the more they will be ready for his abilities, so, elf girl could become more important...
PS : He only got interrupted once against the soul eater (before pulling the worst acting ever to kill it, since the MC was basically speaking for 30 seconds when he only needed to get one word out... doesn't make sense).