Since we don't have much information about this'suga and reader ding dong story', it could be a story written by a fan of someone named Suga. The 'ding dong' part might be used to add an element of mystery or to represent a significant moment in the story, like a doorbell ringing which could start a series of events between Suga and the reader. It could also potentially be a code - name or a play on words within a specific community or group who know the back - story.
Well, the 'Suga and reader ding dong story' might be a fictional account. Maybe it involves Suga, who could be a character or a person's name, and a reader having some sort of encounter or adventure that is symbolized by 'ding dong'. It could be a cute, friendly story or something more complex, but again, without details it's just speculation.
I'm not sure specifically what the'suga and reader ding dong story' is. It could be a very unique or fan - created story about someone named Suga and a reader, but without more context it's difficult to say more.