I always find it weird when people in this manga start dropping their life trauma or some transcendent philosophies the moment they met Shy lol. Happened with the medic girl in the last chapter too.
Fire and calligraphy? That's a really cool concept usually you would think of water because of the "flow" of the strokes, but fire with calligraphy makes some potential for beautiful center folds if the artist is skilled enough to pull it off.