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|No. of Chapters||3 Episode + Sequel Episode + His PoV|
|Game Origin||After School Affairs|
|No. of Endings||1|
Rikiya's Secret is a sub story from After School Affairs.
You and your students want to find out what Rikiya's weakness is, and you discovered it during night watch duty with him.
- Kenzo and Kiyonori mention playing a game called "Clash of the Samurai", which is a parody of Clash of Clans game.