manga creator Kai Byoui Ramune confirmed on his Twitter that his work concluded on February 22nd .
The author launched the manga in the November 2017 issue of Monthly Shonen Sirius . Kodansha published what it called the manga's "final chapter" in August 2019, but the manga resumed last September. The publisher released the manga's fourth volume on December 9th, and will release the fifth volume on March 9th.
Kai Byoui Ramune inspired an anime that premiered on January 9th.
Source: ANN