Princess Principal/Recap/S1/E08 Case 11 Pell-mell Duel

Quoting from Wikipedia: "Chise writes a letter to her sister back in Japan, telling her about her new life in Albion as well as being part of Princess' spy team. For most of the day, she attends regular school activities, though her differing cultural values make her appear odd to her classmates. Chise is also wary of Lily Gaveston, one of Princess' classmates who has connections to the Duke of Normandy and is possibly spying on them. After school, Chise participates in spy missions with Ange, Dorothy, and Beatrice, though she feels insecure about the fact that her fighting skills aren't always needed. She also regularly reports to Lord Horikawa, who wants to know whether Princess' plan to become Queen will succeed so he knows whether to side with the Kingdom or the Commonwealth. One day, Chise is admiring a butterfly when another student, Cameron, arrogantly kills it in front of her and then insults Japan. Incensed, Chise attempts to challenge Cameron to a duel but Princess intervenes. Rather than stop Chise, Princess teaches Chise the rules for a Western-style duel and helps arrange it, nominating Lily to be the witness. Chise and Cameron use antique pistols for the duel, but Chise quickly finds out that her gun has been sabotaged, so she instead uses her necktie as a makeshift sling to injure Cameron and intimidate him into apologizing. The rest of the spy team celebrate Chise's victory, and reveal that they also used the duel as a distraction to sneak into Lily's room to tap the phone she uses to report to the Duke of Normandy. In her next report to Lord Horikawa, Chise admits that she's not sure if Princess will succeed, but she genuinely wants her to."


 * Band of Brothers: After Chise challenges a boy to a duel (with reason) and the team tells her that it's a bad idea for a spy to draw attention to oneself, Princess visits her for a private discussion. Chise expects to be lectured; instead, Princess offers to serve as her second.
 * A Day in the Limelight: Not only does this episode focus on Chise, it's also told from her point of view.