[Senpai Training] Riona the Candy-Giving Kind Senpai Harshly Points Out a 5 dB Shortfall

Celebrating 1 year and 8 months since debut, Riona Hibiki does image training for becoming a senpai to future juniors. She switches from a sweet senpai handing out candy, cookies, and gummies to a scary senpai demanding a greeting and declaring their voice is "5 dB too quiet."

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