Civil servant Yor Briar has a secret identity: an assassin named the Thorn Princess. Lately, single women had been suspected of being spies, which was making Yor nervous. Meanwhile, Loid was searching for someone to play Anya's mother so they could attend the interview at Eden College. He just happens to run into Yor at a boutique. Anya reads Yor's mind and finds out that she's an assassin and tries to get Loid to ask Yor to play her mother.

Anya ends up with a Tonitrus Bolt after she hit Damian Desmond. Sadly, this causes her to stand out for the wrong reasons in class which depresses her, but she ends up friends with Becky, and school becomes a little more fun. She also tries to apologize to Damian for hitting him, but just can't seem to get the words out. For the sake of Operation Strix, Loid disguises himself as someone who works at the school and tries to help Anya reconcile from the shadows, but...

Why has Yor been coming home late every night, her hands covered in cuts? Why has Franky asked Loid to meet him under mysterious and urgent circumstances? These are two tales of misadventure while seeking happiness in Berlint.