Sunken Fossil World/Minamitsu Murasa

Chapter 1 「Incidental Flood」
Versus Marisa Kirisame

Chapter 2 「Inevitable Flood」
Versus Kogasa Tatara

Chapter 3 「Oil Barons」 - Those Who've Grasped the Whole World in Their Hands
Versus the Yorigami sisters

Chapter 4 「Sudden Visit! The Fusion Reactor Next Door」
Versus Kanako Yasaka

Chapter 5 「Before It Heats Up Again!」
Versus Utsuho Reiuji

Chapter 6 「The Secret Hidden within Former Hell」
Versus Yuuma Toutetsu