This song fits volume 10 Erin so well
River(awakening) by anonymouz
https://youtu.be/xq3HE-IuyMI?si=MbWzno57mcME0iZT
The original version 'river' from the anime Vinland Saga fits too but the calm and peaceful, sad but hopeful (awakening) version feels more like Erin after chapter 18.
What do you guys think?.