This is situated 70 years after the ending of Code Geass R2. There are no specifically defined characters. You may see it as an Epilogue. Third person narration. And I don't think I need to say this since its a given, regardless, do not read this unless you have finished the series first.
Kei deals with his jealousy while Hikari finally realizes her feelings. A bit heavy. Emphasis on Kei's perspective from an omniscient narrator. One Shot.
Kei and Hikari later in their marriage.
Emphasis on Kei's perspective from an omniscient narrator. Just a normal day, a normal day for Kei, minus the headache. One of the earlier days in the series. One Shot.