Hitori Tabi de Itta Saki de Masaka Ano Kirai na Joushi to Souguu ~Kou Natta no mo Zenbu, Dotacan Shita Kareshi no Sei Dakara ne~

The morning of a hot spring trip she had planned with her boyfriend — Hikaru receives a cancellation from him.
Lately, Hikaru has felt that his feelings for her have been drifting away.
The trip was also intended to repair their crumbling relationship…
Her hopes have been betrayed, and she feels a hole in her heart.
But Hikaru changes her mind and decides to head to an inn alone to find some healing, if only for herself.
–But fate is cruel.
What was supposed to be a peaceful solo trip takes a turn.
There she finds the person she least wants to see at work.
Hikaru never dreamed that she’d encounter her “most hated boss at work” in a place like this.