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Seiren is the mysterious alien planet, comprised with mostly a female population. Because the men on Seiren are completely rare and comprise less than 10% of the population (presumably with 90% of the population being female), the women will often go into a crazy frenzy the instant they see one and attempt to capture the men for themselves in order to mate with them.

Aside from its female inhabitants, Seiren is also home to several dozen unknown, wildlife animal and planet-like creatures.

However, the planet's location is unknown, but it is believed to be near Earth as it is seen and implied in several episodes.

Notable InhabitantsEdit

TriviaEdit

  • The name Seiren is mistranslated as Siren in English printings of the manga.
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