Behind Invisible Lines [Kuroko no Basket FanFic]

There are secrets about the world that goes unknown, and one would be the Hidden World. It's a place of complete fantasy and tragedy, and standing as the Guardians over it are the Kuroko twins: Setsuko and Tetsuya.
When Setsuko returns to the real world and joins Seirin High School, she thought it would be time spent with her close twin. But when visions start coming true for her and she meets the people in her brother's life, she realizes that there is more to her life than she previously thought. It takes Kise Ryouta to awaken things of her past, and to help solve the events that take place between the two linked worlds.

Fantasy, Romance, Mystery/Suspense, Action/Adventure, Friendship, Angst, Hurt/Comfort, Tragedy

KisexOC, KagamixOC, KurokoxOC, MidorimaxOC, AominexOC, AkashixOC (hinted)

[WARNINGS] Dark themes will be implied, Cursing, use of original characters