I've been loving Yodokawa's works, so more of it is great. I love Yamada already, she seems like she can be a little gremlin which is always fun, and I feel like she and Aoi will bounce off each other really nicely. As far as yuri goes, in my eyes, it almost definitely will have some romance; hard to explain and it really is too early considering it's the first chapter, but there are little things that combined with prior knowledge of the author's works make it the obvious conclusion, but it remains to be seen.
That said, I will be infinitely amused if the next chapter rolls around and it starts with them waking next to one another in bed.