With over 300 million views on "Shousetsuka ni Narou" (as of August 2025) and more than 2.5 million copies in print, the hit series "The Carefree Lord's Fun Territory Defense: Building the Strongest Fortress City with Production Magic" is coming to TV! The opening theme "Okirakuze~shon" by Rei Nakajima, written and composed by Hyadain (Kenichi Maeyamada), bursts with playful, cute, and pop energy. The coupling song "Moshimo-shi," written by Rei herself, serves as the theme for her CBC Radio show "Rei Nakajima no Kyou mo Hanamaru! Radio." The Limited "Yoisho Edition" (First Press) includes a Blu-ray with special footage such as the "Okirakuze~shon" Music Video and Behind-the-Scenes clips.