Regarding the matter in which my fiancé's infidelity was revealed because of our pet parakeet.

Erika Addinsel one day discovers that her fiancé and younger sister have been having an affair. Their infidelity escalates from sneaking around on secret dates to committing adultery in Erika's own home. Unable to bear their blatant disrespect toward her, Erika becomes determined to retaliate against them both. As Erika contemplates how to get revenge, she hears her pet parakeet say something that sparks an idea. "……That's it." The scene shifts to her sister's birthday party. Erika bursts in before her fiancé, who had been planning to announce their engagement was broken off. ――Clutching a birdcage in her hands. ※The R15 tag is just a precaution. There are some crude jokes that certain people might find vulgar.