My favorite part was when Kazehaya panicked and slammed the table in an attempt to save himself from embarrassment because of Sawako's mistaken mail delivery. It is just so typical(ly cute!) of her to lack the confidence to even think that it was addressed to her.
It is really absurd if people actually start doubting Sawako just because of some rumour, although it seems something of the sort might happen in the preview. Are there people stupid enough to actually think that someone who cannot even speak properly to people, much less someone who drives people away with just her presence is able to spread rumours (whatever content they may have)?