My Sister Burst In While I Was Masturbating (2013)

Caught in the act—the ultimate intrusion by my older sister.

While the protagonist is in the middle of a private moment, his older sister unexpectedly bursts into the room. The situation quickly shifts from embarrassment to a series of intimate encounters as the sister takes control of the situation. This entry focuses on the 'intrusion' theme common to the Sister studio's lineup, emphasizing a domestic setting and spontaneous interactions

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