Anna Borisova is a female pseudonym created by the famous Russian author (Grigory Chkhartishvili). He used this pen name to experiment with more "sophisticated" and philosophical literature that differed from his popular Erast Fandorin detective series.

: Released in 2009, the story follows a mysterious stranger who wanders the streets of Saint Petersburg, engaging random people in conversation and telling them strange, life-altering stories.

: This 2007 novel begins with a terrorist attack in a Moscow airport. The narrative follows various victims into the afterlife, where each person experiences a version of "the other side" that perfectly matches their personal beliefs—or lack thereof.

The "Anna Borisova" project consists of three distinct novels, each exploring deep existential themes:

: This book is noted for its dreamlike atmosphere and the quality of the "stories within the story". It captures a sense of modern urban mystery that is characteristic of Akunin’s more experimental works. 3. Vremena goda (The Seasons) Tam... by Anna Borisova - Goodreads

: Critics and readers often praise the book for its creative, multi-layered look at human spirituality. It is described as a thought-provoking "thought experiment" that stays with the reader long after the final page. 2. Kreativschik (The Idea-Man)