Author had ZERO idea where they were taking the plot and was just pantsing it the entire time. That's why the fated mate plotline was handwaved away at the end, and why the Yuu being handsy during Ao's heats ("I know your body best") also just disappeared. The end result is that everyone is a boundary-violating creeper.
I can only assume this mangaka is a Latino otaku and only picked up a bastardized, flanderized version of Latino culture (which tbh is like saying "Asian" culture, there is no singular culture lol) from fictional media.
Author had ZERO idea where they were taking the plot and was just pantsing it the entire time. That's why the fated mate plotline was handwaved away at the end, and why the Yuu being handsy during Ao's heats ("I know your body best") also just disappeared. The end result is that everyone is a boundary-violating creeper.