Two stories: teachers who date and one has a scent fetish, and neighbors who have been friends since childhood. One visited the other often because he was too sick to go out. Now that he's relatively healthy, he works full-time while the other is still in high school. Because they'd known each other for so many years, the age gap didn't bug me too much, but I think it was probably 16 - 21-ish? Maybe older?
Nandaka Ii Nioi