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60This manga tells the story of three sisters who are intent on winning a mahjong tournament held every 4 years —The Jan'ou Ketteisen—, where the most powerful players fight for the title of the best player of the world. This is a story filled with emotions, sweat, tears, and some slight eroticism.
Related to the manga [Twilight Oomaga Toki](https://www.mangaupdates.com/series.html?id=49614). Asano Hiruma has just transferred to a private school on a scholarship. At first, he is confused as to why he was chosen by the mysterious headmaster, since he is not particularly good at either academics or sports. What *does* make him stand out is the special sight that allows him to see things ordinary humans can't. At his new school, his special sight will get him involved with resolving many situations involving aliens, spirits and demons!
The distant planet of Aterui was a human colony connected by a wormhole gate. However, an incident causes the gate to close, leaving Aterui isolated from Earth -- it takes more than three years of deep space travel to reach it. Salta and Nibetz are two engineers sent from Earth to repair and reopen the gate, and they find the planet has become a wild frontier where society is dominated by women. They almost immediately run into a powerful young woman named Homura, an outlaw who seems to be holding one of the four keys that can reopen the gate. The three of them become reluctant allies, but Salta and Nibetz aren't the only ones looking for the gate keys...
