Ost Ryuugajou nanana no maizoukin

Synopsis:

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"I'm going to build a place where young people can challenge to reach any of their dreams!"
The 7 genius students, known as the GREAT 7, launched a project to construct an artificial island called Nanae Island to realize their leader, Nanana Ryugajo's peculiar idea.
12 years later, with a total population of 100,000 people with as much as 80% of those inhabitants being students, Nanae Island has successfully become prosperous as a special student zone. One of the island's newest residents was Jugo Yama -- a high school student who had just transferred to the island after being disowned by his father. One day, Jugo finds in his own apartment the earth-bound spirit of the late Nanana Ryugajo, who was murdered by someone 10 years ago! Jugo's plan of living alone was suddenly thwarted by this strange roommate.

Opening:

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"Buttlerfly effect" by Shiritsu Ebisu Chuugaku (ge.tt)

Ending:

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"Kasukana Hisokana Tashikana Mirai" by Sphere (ge.tt)

Others:

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Nanana's Buried Treasure Character Song & Soundtrack CD Vol.4
Ryuugajou Nanana no Maizoukin Bonus CD Vol.5
Ryuugajou Nanana no Maizoukin Bonus CD Vol.6