Yoshugara Hikaru and his little sister, Mioto, are childhood friends of Sugihara Hakuro, and Hakuro’s little sister, Akimi. Although Mioto and Hakuro love each other, Hikaru is also secretly in love with Mioto. One day, Akimi walks into Hikaru’s room whilst he was playing with himself while spying on Mioto and Hakuro. Akimi demands that Hikaru finds a way to break-up their sibling as Akimi also loves her brother. Hikaru refuses her but Akimi threatens to reveal his shameful act. Hikaru loses his temper and rapes her. Horrified by what he had done, Hikaru eventually agrees to cooperate with Akimi on condition that his indiscretions be kept secret.

Twins Izuru and Kokone harbor a deep love for their elder brother, but only Izuru has acted upon her feelings so far. When she arrives home from school, Izuru often goes directly to her brother’s side and indulges in him. Unlike her proactive sister, Kokone merely watches them from the side while drowning in jealousy. All she can do is pleasure herself to the sound of their salacious acts.

One day, however, Kokone’s frustration bubbles up, leading her to lash out at her sister and brother. Now, Izuru takes it upon herself to console Kokone, trying to convince her to be more honest about her feelings.

Sex Exchange

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Japanese : 義妹 [いもうと]
Aired : Apr 14, 2006 to Sep 8, 2006
Studios : Y.O.U.C
Duration : 28 min.
Subs : English
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