[X] Accept – Kaguya Sumeragi joins the retinue of Lelouch vi Britannia as political insurance against an Anglo-Japanese KMF development deal. Kaguya starts at SL (2) and may be upgraded to either a Diplomacy or Stewardship adviser with further actions.
[X] Refuse – Kaguya Sumeragi returns to Japan empty-handed, you retain right of safe-passage through Chinese Federation territory and waters. No danger of Japan ever defaulting on their promises to play nice with Britannian R&D companies given that they're going it alone.