Yoko Yano

Sixteen-year-old high school student Takeshi Chimatsuri has devoted his life to being a master samurai like his father was. Then one day, the Toki twins, two ninja sisters he's known since childhood, transfer to his school and issue him a challenge to take back their family dagger from him. Unfortunately for him, they have discovered his one weakness: the fear of the naked female body. Now, Takeshi must undergo special training from his classmates Atsuko and Torai, and his teacher Miss Ayatsugi to resist the combined brute strength of Akari and the temptation of her sex-crazed twin Kagiri. Class will never be in order with these three constantly fighting each other.

In the not-too-distant future, the Earth finds itself constantly under attack from extraterrestrial threats. The Terrestrial Defense Force establishes the Ultra Garrison, a team of six elite members who utilize high-tech vehicles and weaponry. Joining their fight is the mysterious Dan Moroboshi, secretly an alien from the Land of Light in Nebula M-78, who transforms into his true form in times of crisis, Ultraseven.

As supernatural events and monster attacks rock Japan, the military and government look to be overwhelmed. Three intrepid young investigators—two pilots and a reporter—take it upon themselves to study these unexplained phenomena in order to inform and protect the public. With allies and science aiding them on their journey, the trio must separate myth from history as they explore the greater mysteries of these occurrences: are they unrelated, or is this barrage somehow a portent of even worse things to come?