The BS Situation of Tougetsu Umidori Vol. 4 light novel

A decade-old secret revealed!One fall day, Bullshit-chan takes Tougetsu Umidori to the mall. She’s acting odd and has something she needs to tell Umidori. But the sinister Mud Hat Faction is after them, and the group’s plans have the potential to wreck the whole of Kobe. Umidori with cat ears, Bullshit-chan’s Grill, a novelist from Aomori, another Seiryoin, and financial gatekeeping! At long last, learn what really happened ten years ago and how Bullshit-chan came to be. What answers will that lead them to? The strangest story around reaches its climax!