He didn't. He released an actual epilogue showing Gowen finally (?) banging Richildis while Cecil gets some Olwen few feet away, when both couples are living in Wales. It's a paper-only release though so good luck in getting a scan of that. Oh, and C84 is Eren x Mikasa, unsurprising since he's strangely very vanilla on most of his parodies.
EDIT: Saint Foire Festival/eve Richildis:2 | It can be purchased online but no DDL release that I know of.