To be fair to Haru, I think she has the right approach
when she doesn't have a current assassination notice put out against her.
When you don't have that going on, take it easy. Relax. Have fun. As much as you can of course. Shoot the breeze with your classmates and try to get on their good side. Who knows? Maybe you actually can emotionally appeal to another one of these assassins, and make them go soft on you. It's
extremely unlikely, but hey, Haru's right about how Tokaku herself proves it's not impossible.
But once you receive that assassination notice, it's siege mentality time. Bunker down and take absolutely minimum risk for the next 48 hours. I don't know if I'd even shower for that 48 hour period if it was me in her shoes.
But no, Haru wants to go off on some whimsical treasure hunt
while she has an assassination notice put on her. I mean... what can you say about this, really?