Alright, there's no mention of any resistance to poison, Saminjutsu, experience with poison, training in evading poison, or anything of the sort in Hotarubi's CS. If she was a ninja, it might make sense, but Samurai are warriors who live by a VERY strict code of honor (Bushido). The don't do poison, and as such have little experience with it. I see no reason Hotarubi should have this skill mentioned in either her CS, or her posts.