So her plan was to sleep with him… I mean that would solve some of her problems, it would also create a fuckton of new ones, and it’s also short sighted since on the field trip they will most certainly segregate them.
And all of this to become his best friend, I kind think she might have jumped off a cliff with that reasoning (or lack thereof) of hers. I have no idea how Kuroki would react, given his track record of just agreeing with things, and also not paying attention when she speaks and winding up in situations he didn’t even realize he walked into. Ultimately the two of them are idiots who will just walk head first into situations without even meaning to and with little regard for anything at all. So in a sense I can honestly see her plan working out by sheer thoughtlessness on both their parts.