Keita has two older step-sisters, Ako and Riko, but since they aren't related by blood, they love him in a lustful way. After a mishap at school, Ako and Riko finally confess their love to him. Keita dislikes the thought of seeing them other than brother and sister, but as he tries to enter the same school as his sisters, he slowly becomes attracted to them.
(Source: Anime News Network, edited)
Tales of Symphonia The Animation: Sekai Tougou-hen
The manufacturing colony Industrial 7, which is still under construction, floats at Lagrange point 1.
A youth named Banagher Links, who grew up without knowing his father, meets a mysterious girl who has stowed away on a ship bound for Industrial 7. As the white mobile suit Unicorn undergoes repeated tests and becomes the subject of diverse speculations, the hands of time begin to move.
Banagher does not yet know that he has been caught up in the conflict surrounding Laplace's Box.
What is Laplace's Box?
What secret does it contain?
The hundred-year curse of the Universal Century is about to be resolved.
(Source: Mobile Suit Gundam Unicorn official website)
It is the start of Takatoshi Tsuda's second year as the put-upon vice president of the student council and his sister Kotomi is entering school as a first year. New friends and double entendres are made.
(Source: Anime News Network)
Tales of Symphonia The Animation: Sekai Tougou-hen Specials