One hot summer day, Naoto Kamino finally musters up the courage to reveal his true feelings for his crush, Manabe Rika.
Unfortunately, at the same moment, a young boy named Asumo appears (though he refers to... himself as the devil).
He plots to kidnap Rika and will stop at nothing to obtain her - but Rika has a little secret of her own, she can transform and
obtain magical powers during sex...
Otonashi Meimi is walking alone in an empty park when the demon Rococo suddenly appears. Rococo users her Eternal Arm attack
on Meimi in order to separate the power of Misty Mei from within her body.
Meanwhile, at Naoto's house, Hikaru, Naoto's stepsister who was studying abroad, returns home. She starts going to the same
school as Naoto, and it worries Rika, Naoto's lover, a little.
"I love you the most in the world." With these words, Naoto makes love with Rika in the school nurse's office. However, Misty Mei
appears and spirits Rika away. Then, the angel Luvril appears saying that Naoto has no choice but to have sex with Hikari so that
a new Djibril can be born to save Rika.