A Certain Magical Index, Vol. 16 (light novel)

A certain unlikely hero...Acqua of the Back, agent of the Roman Orthodox Church, has finallymade his move. The incredibly powerful saint and member of Gods Right Seat is on the hunt for one thing: Touma Kamijous right hand!After receiving a warning letter from Acqua, the English Puritan Church dispatches Itsuwa to serve as Toumas bodyguard. But for some reason, the first thing she does after arriving in Academy City is show off her incredible cooking and housekeeping skills. Its enough to bring tears to Toumas eyes, but the freeloading Index only perceives a threat to her position...The comfortable serenity is soon interrupted, though, when their worst enemy appears on the scene...!