After failing their attack on Abydos, Problem Solver 68 are currently preparing for their next move. On the other hand, their leader, Aru, is struggling with the difference between her ideal and reality. Meanwhile, while Shiroko and her team are running away from Black Market, they decide to leave the large sum of money they inadvertently acquired during their heist. During that time, something big happened at Serika's part-time restaurant, Shiba Seki Ramen.