Which Anime Uses Kepler Elements For Space Travel Plots?

Erika, an eighteen-year-old Gamma with superior fighting skills, finds herself being the mate of one of the strongest Alphas that has ever existed, who is also a control freak. Erika is asked to submit, but all she wants is to be free. It would be a long and violent journey to change from a Gamma to a Luna.

She gave up the stars for him. And he threw her away. When Aria Carter discovers her husband’s betrayal, the dream she buried years ago reignites. NASA calls with an opportunity of a lifetime: a mission to space in just one week. She takes hold of the opportunity to escape her broken marriage and reclaim the future she thought she had lost forever. But training comes with one complication, Commander Adrian Vega. Arrogant, infuriating, and devastatingly handsome, He makes it his mission to remind Aria she’s the only female in a world built for men. Their rivalry sparks in every simulation until launch day throws them together, alone among the stars. In the silence of space, teasing turns into tension, and tension into something, neither of them can fight. Yet Earth is waiting, and so is the man who once held her heart. Will Aria fall back into old gravity? Or will she choose the dangerous pull of a man who makes her feel weightless?

After the death of her father, Celine Hathaway was forced to enter Celestia to find her mother as a fulfillment of her father’s last wish. She was estranged by her surroundings in the enchanted world where magic exists and was scared of all the strange things that she never have encountered before. Celine went everywhere and met different people as she connects the clues and hints of her mother’s whereabouts but little did she know that being close to her goal also means being close to danger. What truths will unfold on Celine’s journey on finding her mother? Will she find unexpected love on her way?

Stella Grace is an astronomer who perceives coordinates in peculiar constellations. By following the path of the stars, she finds a supernatural world she never thought existed, and consequently saddles her destiny with a cruel alpha and little interest in being connected to an ordinary human. When the supernatural arises, doors open to reveal the influence of the moon and stars on the fates of these two creatures, but there are horrors and adventures that not even logic would be able to explain.

25-year old Taoyama Naruki has nothing going for him, no plans for the present or the future, his life consist of working part time at a convenience store and spending every extra penny at a small Ramen place. However, one night, life finds a purpose for him in the form of sad and lonely Akari. Follow the story of this cosmonaut, traveling aimlessly among the stars.

The Raikiri clan, which was famed as the most prominent military and tactical geniuses, existed since the feudal Japanese period during the reign of Minamoto Yoritomo. Bestowed with great power, the descendants of Iwasaki Senju yielded the Amaterasu, the power which awakens under emotional stress. Kenjirou Subaru was hailed as a legend for saving the clan at the tender age of six from a unit of 70 yakuza. However, all good things must come to an end eventually as the ancient Ninjutsu clan was assassinated in cold blood, probably by an external group fearful of the clan's prominence and place in modern Japanese culture. The horror of the heinous tragedy at his birthplace, the Village of Raden in Osaka rendered his mental condition unstable thus causing Izanami to go rouge. Unbeknownst to him, he ends up in Tokyo, involving in a frenzy of incidents, gathering to find the intel on the person or the organization responsible for the eradication of his people. Therefore, eking out an existence and pursuing an education. He would eventually make his way to Mitsushiba. He enrolls in high school and thus begins his quest to discover himself again. Eventually, he would be befriended by a group of students who change Subaru's view of life and show him that life this beautiful is worth living or is it really the case....