(on vol 2 so far) I feel like we're being TOLD that the main leads like each other, but we don't really see WHY or what it is they like about one another. I hope this will be fleshed out later on. Also seems unrealistic that for the classmate to be allowed to move in that easily under such unusual circumstances esp since the caretaker is usually protective about his steward. This event seemed contrived in order to allow for a love triangle.
Hana wa Saku ka