The Azure Twin is another Bond-focused side mission in Fire Emblem Engage where you will be facing off against Emblem Eirika in a reproduction of a key battle from Fire Emblem The Sacred Stones.

This page of IGN's Fire Emblem: Engage wiki guide contains a walkthrough of Chapter 12 - The Sentinels. This walkthrough will take you through all the new unlockables, Characters, Emblems ...

All franchises have things that don't make sense, and Fire Emblem has no shortage of head-scratching details.