Colette wa Shinu Koto ni Shita

Colette wa Shinu Koto ni Shita (コレットは死ぬことにした, lit. "Colette Decides to Die") is a manga series by Aito Yukimura. It is serialized in Hana to Yume.

Plot
Colette, a girl who has been asking herself about the purpose of her being a doctor. One day, she decides to escape her duty, and falls right into a well, hoping to go to a different world. The moment she wakes up, she finds herself in the land of death.