Works from my two Ao3 accounts, madoka_take_me_away and clover812
Invisible Touch (Jon/Martin, Rating: Explicit, Words: 5389, Warnings: Mild noncon) Jon ends up with a brand new sex toy of unknown origin. Martin tries to figure out what, exactly, keeps sucking him off. Post-Unknowing. T4T Jmart. Jon ace subtype: Oral fixation.
Satin and Lace (Jon/Martin, Jon/Tim, Jon/Sasha, implied Sasha/Tim, Rating: Explicit, Words: 4090, Warnings: Some consensual feminization of a cis man) The Archives crew dress Jon up pretty and make him cum. Or, never let it be said that Jonathan Sims didn't commit to the bit. Jon ace subtype: enjoys stimulation, not reciprocation. Gentle dom/sub dynamics. Fruit salad of kinks. No penetrative sex.
The fic where Jon has the longest hair (Jon/Martin, Rating: Teen, Words: 3886, Warnings: None) Jon's lifelong wish for Rapunzel hair is supernaturally answered. Post canon, in a happy ending AU. Mild sweet long hair kink content. No smut.
All That Glitters (Gen/pre-slash, Rating: Mature, Words: 7026, Warnings: Suicide attempt) In the months since Jon woke up from a coma with a great big pair of wings, things have been unpleasant; he's lonely and stressed and filled to the top with horror at what he's becoming. Maybe eyeliner will help. (In which Jon copes with everything through self expression and accidentally stumbles across self-love.) Post-Unknowing. Suicide attempt is unsuccessful. Wingfic. GNC Jon. Happy ending.