Shattered Songs of Faith (смешанная)

Fire Emblem Three Houses AU Story: What if Sothis was with Byleth since their childhood days?
"If only I could touch the stars."
Born sick since day one of her life, Arisa grew mostly in a hospital room. At some point in her life, she got better and was able to live the way she wanted. Freedom, make friends create bonds, travel the world. But that dream to continue living a healthy life was struck down when she turned 23. Her illness came back but much worse, and this time, she would not win the battle.
3 year laters, on her 26th birthday, she passes away in her sleep.
Now, one does not expect to wake up in another body when they die. She did not expect to come to such a world that she had only read and played through technology. What's more, that she wakes up as Female Byleth during her childhood days.
(Paralouges you will find in my other book, Shards of Memories and Songs.)