It was revealed during the 28th chapter of the Touken Ranbu: Hanamaru manga that the last chapter will be released on April 4. This was revealed in the Shonen Jump+ website on Thursday.
The manga is created by Saru Hashino and released in December 2016. It is based from the anime series of the same name that first aired in October 2016. The anime’s first season was aired for a total of 12 episodes which was then followed with a second season Zoku Touken Ranbu: Hanamaru that first aired in January 2018 and had a total of 12 episodes.
Touken Ranbu Hanamaru is an anime series based on the popular browser game Touken Ranbu Online which is available to play via the DMM website or through their mobile app Touken Ranbu Pocket (Japan only).
About Touken Ranbu Hanamaru (as described by Crunchyroll)
In the year 2205, the past becomes threatened by the historical revisionists who seek to change it. Protecting history becomes the task of a boisterous band of swords that are brought to life, including the glamorous Kashu Kiyomitsu and the kindly Yamatonokami Yasusada. Beyond their battles, these legendary swords from different eras lead charming daily lives
Source: Shonun Jump+, Anime News Network