For Academy of Heroes' Azureus house calendar.
October is the month of Halloween! What better month to showcase Azu dorm's 5th (4th) floor ghost fish?
Vennanana has moved into the room 504E, so she gets visited by them now and then (dorms D and E of every 5th floor suite are actually under dorms A, B and C, meaning they are kind of where the 4th floor used to be, and also where these ghost fish show up). This is not bothersome at all - rather, she likes to give them names and try to experiment with them---or just sit and watch them for a while. 8)