is a Japanese manga series written by Demunyan and illustrated by Daisuki Tansan. It was originally published as a web comic on Demunyan's personal website, before beginning serialization in Media Factory's Monthly Comic Flapper magazine in February 2021. The series has been compiled into nine volumes as of January 2026. An anime television series adaptation produced by Passione is set to premiere in 2026.
When she was in middle school, Kurumi Fukuga's mother Kozue became involved in foreign exchange (FX) margin trading. However, Kozue had secretly been using the family's money, which caused her to lose following the bankruptcy of Lehman Brothers and its associated fallout. Unable to bear with the losses and their possible effects on their family, Kozue commits suicide, devastating Kurumi. Vowing to avenge what happened, Kurumi spends her high school and university years becoming interested in FX, hoping to earn back the 20 million her mother lost. Despite some early successes and her good intentions, she realizes that margin trading has its consequences.
Demunyan originally began posting the series as a web comic on their personal website on October 18, 2016. It was later picked up for publication by Media Factory, which began serializing it under its Monthly Comic Flapper magazine on February 5, 2021; the serialized version features illustrations by Daisuki Tansan. The first volume was released on July 21, 2021; nine volumes have been released as of January 22, 2026.
An anime television series adaptation was announced on January 19, 2026. The series will be produced by Passione and directed by Yuki Ogawa, with Kenta Ihara handling series composition, Kazuyuki Ueda designing the characters and Takurà  Iga composing the music. It is set to premiere in 2026.