Because Matt would likely not get off my case if I didn't add this page, it is now present.
Note: I jest. I literally just forgot to add this until now.
Eric's Suspicion is a route in which... well, Eric gets suspicious about Erin's behavior.
I... am not sure what you were imagining it would be about, to be honest.
With that said, as always, here's a link to the other transcripts in the game.