She wants his dick, no other explanation, woman can't not think of sex when around him. Fujio, go make that 4th kid or else this manga is going to become a H series.
The death glare she gave Yanagi, and then Tsuki who seemed the most reasonable and practical at the beginning of course had to screw it up with her delusions. If Sakurai was even a smidge as bad as her illusions paints him as he would have fucked all 5 of the Uzaki family already lol.
I can't wait too see what kind of explanation Hana will get.
Also I get the vibe, not the first time either, that Tsuki wouldn't be 100% against having a tussle with Sakurai...