This is a story challenge for Vampire Knight/Sailor Moon. It will be Usagi Tsukino and Takuma Ichijo
They will have fallen in love with each other while Usagi and Mamoru are on a break, all because Mamoru wants them to date other people but Usagi doesn't want to. Until she meets Takuma who is hurts and takes care of him, and then they fall in love but when Takuma's grandfather gets wind of Takuma falling in love with a human woman he forbids it and Takuma and Usagi go separate ways. Breaking there hearts.
Usagi and Mamoru get back together until he goes to America in the last season.
They are no longer together weather it's because, he died in the plane crash and didn't come back to life or because he met someone else and didn't want to be together anymore.
Usagi falls into a depression and only has the gift Takuma left her when they went separate ways to remember him by. Only her mother decides to plea with her brother Kaien Cross to accept her into his school and he does.
Where she met Takuma again! Only for them to fall in love again. While trying to keep their secrets still.
Also usagi has the same life span as Takuma.
Thanks so much for reading and please let me if you decide to write it.
I don't know if this is the right way to issue a story challenge but if not sorry. Also I hope you'll let me know if you take the challenge so I can read it. Thanks so much!