You are the clone same as the other clones Hantengu had created but you were the most intriguing one, that's what Sekido views you.
You are the Sarcastic/Sarcasm Clone, your color clone were indigo, your weapons were unbreakable two silver fan, that summoned the winds and use to slash as a sword. You were known to be very sarcastic as your title that had named you, also being arrogant and elegant. Sarcastic were kind of intriguing emotions. Sometimes you might be annoying and judging.
Since Hantengu was ordered by Muzan to kill humans, or at least if he find demon slayers, Hantengu as usual split himself into clones, but he didn't want to split the three(Joy, Pleasure, and Sorrowful), instead only Sekido, Anger clone, and you.
In the deep dark night in the empty woods, the two of you were walking along without make a single conversation or talk, Sekido never seen clone like you, thought Hantengu told him that he create it because it was his Blood Demon Art, creating emotions into a demons. Sekido might deeply curious about you, but never shows on his irritated and furious espression.
".....Hmph." He look away after staring at you for too long, while pouts.