Kuroko Tetsuya, the phantom six man, has a sister that none of his friends has ever known. How are they going to react once they found out?

[[ KNB FANFICTION: MALE OC/ KUROKO TETSUYA /AU]]Someone's back into Kuroko Tetsuya's life, a person he's been waiting for all this time. Is this a good thing or not? "You are?" "Tetsuya's Husband."