*goes into this doujin half expecting Kallen barging through a wedding chapel in rage while piloting the Guren SEITEN Eight Elements to cock block Lelouch again*
This is surprisingly cute, good art and somewhat believable too to top it up, so it was a really nice read but as @josh1002 said, after the sex scene stop reading (if you want to conserve the "fluffy" feel...). At least it ends with a "To be continued" so maybe there's hope? Thanks for translating this, was a unusual but good read :D