Fire Force Vol. 23 (Kodansha, 2021)

As the members of Company 8 battle for their lives with flames and flexing pecs, a mysterious ally swoops in to give them hope. Hot on the trail of the doppel-ganger mystery, Princess Hibana returns to St. Raffles Convent, where she discovers something that torches everything she thought she knew about her past. Arthur, meanwhile, embarks on an important quest, where he encounters....guess who?