lol Allen already impressed Itachi with his acrobatics and dodging skills. :T Because Itachi remembers being able to do things like that, too, and it was interesting to meet someone who already got a skill like that back. He's also enjoyed the conversations he's had with him in general, so he has positive associations with interacting with him and doesn't mind trying to show him how to use ninja weapons. |D

Speaking of ninja weapons, does Sharon know Mithos acquired a ninja teacher for her?