@XL My headcanon is that he's not even smoking it. He just holds it up to his mouth in a facsimile of their memories and it never goes out cuz it's made of him.
Feel like the second kid is the lanky guy who was painting when Takoha got nabbed earlier on, but I have no idea how hes older and Seiichi is still so young.
Didn't they bomb it because stuff was already going on in the mansion? Were the initial phenomena the aliens attempts to get through, or something else entirely?