Hiyori did all that flirting and teasing with Zoro just for Kiku to be the one to live out her fantasy. All Hiyori can do is just watch and stare as Zoro gives Kiku his 4th sword
I’ll whisper such obscenities in your ear that your cheeks will burn, and then I’ll bring every single one of those fantasies to life — hard, slow, mercilessly