I thought as much. I do want there to be, at one point, a demon that fucks with Botan and then she mentions how upset Kurama is going to be. The demon asks who Kurama is and why he's meant to care about her boyfriend, until Botan refers to him by another name, Yoko, and the demon's just either GONE or begging her to just arrest him xD anything but Yoko. Or some demon can smell Yoko's energy on her and is just OUT! Botan is walking demon repellent after that.

It's the plan; it could also make Botan a little more popular among some girls--while still having haters--because they aspire to be like her... and maybe ask about what Kurama is like, since no one really knows about him outside of class. Likewise, Kurama may have some guys approach him about what type of girl Botan is like, as well as some classic perverted questions. Big mistake thinking Kurama is just 'one of the guys' and he'd talk about his girlfriend so recklessly, even if it is pretend. Gotta be protective.

Yoko could have had more than one enemy. Some people might just think about taking him on because it would increase their fame, sort of like bounty hunters? Yoko's been independent for a long time and not many have come as close as Karasu to beating him. But now Yoko has a woman they will try to exploit, which is a far more dangerous game to play than using Shiori against him, but just BAAAARELY. I don't think Botan wants to see what Kurama would do to someone who threatened her life, much, MUCH less what Yoko does. Scary shit.