^ "After getting up to date on the manga, go back and have a drink when you encounter a character or plot element that would become more important later on."
- TVTropes drinking game
The authors earn a hat tip for their foresight in making random background characters just distinctive enough they can be readily spun up into more prominent colourful cast members as needed/desired. Nemo is one of the earliest and most notable examples, having spent the first in-universe year as one of Okada's unnamed friends who had like two lines total over that entire period...
This series turns Ascended Extra into an art form.