A full week, eh? There's only so long Hino (and even Koguma) can resist doing something more when they'll be together for all that time.
Ara...
Well, that'll be some motivation... :D
I wonder if she'll agree? I feel like a week long sleepover arc has to have some progress right? Maybe a kiss, or a realization of love?
I actually suspect she'll say she'll do it once they finish their week of studying as a way of motivating Hino, but we'll see. And yeah, there's no way a week together wouldn't lead to some progress.