When Kid Flash arrives at the tower after defeating the Brotherhood of Evil, Robin realizes Starfire doesn't love him like he does as her actions translate into betrayal, and a familiar scrounging enemy, Slade, is there to push corruption and capitalize on the situation when Robin feels alone. No Yaoi even though that'd be hot.
The Titans don't realize that they still have Slade's probes in their body-until Slade returns years after the completion of the series to make Robin his apprentice once again with an antidote. Robin's POV. No Yaoi. Do not own the series (of course - -) but I do own this concept.
After finally returning from Paris, things begin to fall apart for the Titans as Slade returns but can't be jailed because he is not outwardly hurting anyone or committing crimes. Slowly, as he works his way back into Robin's life, the line between right and wrong begins to blur and what Slade really wants is anyone's guess.
A look into the life of Robin with Slade had the teen titans not been so clever. DARN THOSE KIDS! Follows its own storyline as Robin is forced further into obedience by Slade but begins to connect with him, while the Titans struggle to fight Robin off and to find a way to remove the deadly probes. Story is not sexual/yaoi.