Yuki’s first day at Saint Hoshikawa School turns out to be eventful: not only is the school attacked by aliens, she loses her strawberry panties in the process! In an attempt to retrieve them, Yuki helps defeat the alien – thus piquing the interest of the secret organization G-On Riders. Wearing special glasses that unleash their inner powers, these select girls work hard to deflect the constant alien attacks on Earth; and now, they want Yuki to join them! Meanwhile, mumbling Ichiro happens across Yuki’s panties, and tries to return them. Will he be able to carry out his task and confess his growing love to Yuki, or will the space invaders ruin his dreams by over-running the G-On Riders and Earth?
For 1800 years the seven schools of Kantou have fought over supremacy of the land. Their students constantly fight each other in battles to prove their strength. Sonsaku Hakufu is a 17 year old girl that just transferred to Nanyou Academy, and at her arrival, finds herself fighting one of its top 4 fighters. But Sonsaku possesses a soulstone which contains the spirit of a great fighter, and she is not an easy match. When an order is issued to defeat Sonsaku, she finds herself in all out war against all of the schools top fighters. What lies behind this dark conspiracy?
If you like your Anime loaded with gratuitous panty shots and ecchi for no apparent reason, then you would probably like Ikkitousen (which is better anyway). The series are both mindless fun, but G-On Riders has a more traditional harem feel to it.