(you can choose where you are from) the hashira were following the crows to the ubuyashiki mansion. before they arrived the mansion exploded. everyone remained rushing forward. finding muzan there, stuck in lady Tomayo's trap. everyone ran forward using their breathing forms to attack. after everyone attacked, gyomei the stone hashira came forward fighting muzan. everything was.. fine until nakime open the doors to infinity castle making all the hashira fall inside. WHile doing this she made the mistake of bringing the cookie run kingdom characters into their dimension droping them into the castle as well (the cookies are gingerbrave, strawberry cookie, wizard cookie, pure vanilla cookie, dark cacao cookie, golden cheese cookie, white lily cookie, Hollyberry cookie, shadow milk cookie, burning spice cookie, and mystic flour cookie) have fun!