Niina No Ero Youbi Shuumatsu Wa Himitsu Ni Touc Work -

Panicked, Niina quickly tried to hide any evidence of her secret hobby. But, as luck would have it, Maki stumbled upon one of Niina's unfinished manuscripts hidden under the bed.

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Many circles release these as part of a series where the character "grows" or the situations evolve over multiple volumes. Availability and Distribution Panicked, Niina quickly tried to hide any evidence