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This volume contains the following tropes:
- Imposter Forgot One Detail: Shidou points out that Natsumi forgot to take into account that Yoshinon was just a puppet, and so it wouldn't remember the things she said it knew.
- Puppet Permutation: Natsumi transforms into Yoshinon, a puppet to hide from Shidou
- Spot the Imposter: Natsumi transforms into Shidou and Tohka and Origami have to decide who is the real one. This also occurs with Shidou trying to find who was replaced by Natsumi
