Haruchika (ハルチカ) is a manga adaptation illustrated by Būta, with character designs by Namaniku ATK, began serialization in Kadokawa Shoten's Monthly Shōnen Ace with the December 2015 issue.
Haruta and Chika are members of their high school wind instrument club that is on the verge of being shutdown because there are only four members. The two are childhood friends that got split up but reunited nine years later, and they spend their days studying and also trying to recruit new members. When a mysterious event occurs within their school, they band together in order to solve the mystery.
As of the 26th of February 2018, the series comprises of 3 chapters over 2 volumes.