Summary: Tragically orphaned by an automobile accident, the Kasugano twins travel to their grandparents' countryside residence via railcar, hoping to reconstruct the shards of a shattered life. Two lonely souls so physically alike, yet spiritually divergent, they are unaware of the challenges these conflicting expectations will unveil in the days to come. Uncertain of the future, Haruka Kasugano clings to memories of the past, hoping to find the strength he needs to protect his ailing sister.
Other Notes: Yosuga No Sora was orginally a Visual Novel Game devloped by SPHERE. As such the anime follows different "What If Scenarios" for the main character. This story however does eventually develop a solid plot and gives very well done character development.
Picture of all the characters:
If you haven't seen this, I would defintely reccomend it, if you're open minded. (Fair Warning it's rated R+ and has mild nudity)