Game World Reincarnation: Sex on the First Night

I Really Like the Villainess, I Love Her (1x5)

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Diana is locked in a prison by Spica. Not understanding why she was trapped there, she searches her cell and finds Diana's diary. What's more, there was a shocking truth written in it! Meanwhile, Sirius, who came to the Diafell household to see Diana, feels something is off when Diana is not there.