Love between Tenshukaku's walls (Raiden Shogun/Raiden Ei x Yae Miko x M! Reader)

Inazuma, a country which was the theater of a terrible civil war, is now at peace. The Vision Hunt Decree and the Sakoku Decree are now over, but the Raiden Shogun has lost her people's trust and the political tension is becoming even more visible to other countries. To retrieve some trust, Ei and her puppet decided to make their peoples participate to a little test where they will choose their personal bodyguard.

Shirou Kazuki, a young and quite skilled boy will succeed to this test and become the Shogun's bodyguard. Yet, some troubles will arrive with this new mission and new encounters will be made. Will Shoukaku's Palace still be a cold and dark place or does Y/N will be able to break through these icy walls ?