In Nekoji Academy, there was an unspoken rule that everyone must follow. No one should stay in the school after the last bell rings… it was the signal that the Cat’s Hour started. Hikari Terushima, a transfer student, broke the rule obliviously and discovered something that she shouldn’t have...

She was alone and made a world of her own, her armors were her cosplay. Nishimiya was a happy girl until she felt greater happiness due to him. Who was he? What will he become to the girl who called herself a cosplayer? That weird moment of their meet, and the weird feelings that triggered from t...