The new song "Sukitchan! Karachu", the first in about two years for the anime "Zombie Land Saga" with the theme of zombies x Saga x idols x comedy, was released on December 3rd. It is a collaborative song created at the request of Karatsu City, Saga Prefecture, where the anime is set, and is a new song by the idol group "Franchouchou". The lyrics include famous places in Karatsu City such as "Kagamiyama" and "Karatsu Castle", as well as local specialties such as "Yobuko squid" and "Karatsu Q mackerel", and combined with the addictive phrase "Sukitchan! Karachu", it is said to be a song that makes you feel Karatsu City with all your might. A music video (MV) of the members of Franchouchou dancing at famous places in Karatsu City was also released on YouTube.
The jacket illustration for the new song uses a newly drawn illustration for the stamp rally "Zombie Land Saga Revenge KARACHU Karatsu Tour Campaign" that has been held in Karatsu City since December 1st. To commemorate the release of the new song, a social media campaign has also started. Those who post the MV URL and the hashtag "#KARACHU" on TikTok, Instagram, or X (Twitter) will be entered into a lottery to win an original limited edition coaster. "Zombie Land Saga" is an original anime set in Saga, depicting girls who have become zombies and aim to become top idols. The first season aired from October to December 2018, and the second season from April to June 2021. It has also been announced that it will be made into a movie.