SFX Drama Erexion is a South Korean children's tokusatsu drama that premiered on November 24, 2006. It was produced by Chungam Entertainment and aired on KBS 2. Its format is similar to the tokusatsu productions of Japan. The seven members are based upon the seven days of the Asian calendar (Sun, Moon, Fire, Water, Wood, Metal, Earth).
On the distant planet Airon, there was a Crystal tower which held "the crystals," a powerful source of energy that kept the galaxy in balance. The evil Terra, however, tried to gain control of it, and the brave general Kamo stopped him by destroying the tower. The crystals split into seven pieces and were scattered all over the Earth, and Terra became dormant due to an explosion that knocked him out. Thus Li, the high priestess of Airon — along with her bodyguard, Mok-gi, and six individuals from the past, present, and future — ventures off to Earth to find the seven pieces and restore balance . As the Universe Seven, Il-sung, Wur-hwa, Hwa-san, Soo-shim, Toh-ryuk, Geum-gang, and Mok-gi fight against the treacherous Chu-yi and the reawakened Terra, in order to prevent the crystals from falling into the wrong hands.