GTO: Paradise Lost 48-49 (M/F)

[Disguisedagent]

Onizuka, a teacher, tries to save one of his students after she falls under the sway of a flamboyant cult leader named Asako. To undo the student's brainwashing, Onizuka captures Asako and steals her costume and mask in order to impersonate her as part of a trick. It seems they even cut some of the cult leader's hair to use as a wig!