Maken-ki!: Doki Doki! Maken-ki! Himitsu no Kunren | Episode 4
Each of the six volumes of the Maken-Ki! Blu-rays will carry a 10 minute long short anime "Doki Doki! Maken-ki! Himitsu no Kunren". Secret trainings with the main characters will be animated. wait for a minute, the video will load.
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