The Iguro Twins

Aimi Iguro was the younger twin sister of you guessed it Obanai Iguro. It's hard to be in the Iguro Clan a family of 50 2 clans leaders who are obsessed with their looks and wealth and money they despise anyone who looks prettier than them so they wait till they are 12 years old to get eaten by the serpent demon. Aimi is a pretty young lady who looks a lot like her older brother Obanai who all of her family members hate". But she doesn't care about the rules she sees him anyway and she's the one who sent his pet snake Kaburamaru to his way so he could have a friend while in the jail sell. Even though Obanai hated women he didn't hate his sister she is like a role model to him and he hopes one day she will become a Oiran one day due to her beauty.