ユウキはマリアベルに支配されている。グレンダから情報を受け、リムルは自由組合との交流を避けようと決める。しかし、予定していた自由組合との遺跡調査の日が迫っていた。
Yuuki is being controlled by Maribel. After receiving information from Glenda, who has joined their ranks, Rimuru decides to avoid contact with the Free Union. However, the date of the joint ruin expedition with the Free Union, which has already been scheduled, is fast approaching. To guard against enemy traps, Rimuru begins making thorough preparations. Meanwhile, having heard from Yuuki about the magical power control reactor housed within the ancient ruins of Amrita, Maribel is also devising her next strategy to defeat the Demon Lord Rimuru.
Rimuru se prepara para explorar las ruinas de Amrita con un nuevo plan contra sus enemigos.
Após conseguir mais uma aliada, Rimuru quer se preparar para enfrentar Maribel. Mas há um assunto pendente.
Les ennemis de Limule comptent profiter d’une expédition dans des ruines pour le piéger.
Mariabell schmiedet neue Pläne, um Rimuru zu unterwerfen. Doch der bekommt wichtige Infos von Glenda.
Maribel approfitta di un accordo tra Yuuki e Limur per pianificare la nuova mossa.
Yuuki pozostaje pod kontrolą Mariabell. Po otrzymaniu informacji od Glendy Rimuru postanawia unikać kontaktu z Wolną Gildią — jednak dzień planowanego wspólnie zbadania ruin nieuchronnie się zbliża.