Show me how to Love [Modern Au] Ciel Phantomhive love story

[!!!Three books in one!!!!]
Book one:Time and Heart Break-Ciel doesn't understand how he ended up going from doing a mystery case about a murder to being stuck in a time where nothing he sees makes sense. No one he tries to call out to hears him until a young woman about the same age as him notices him and makes it so he is able to be seen by others. Will the young woman be able to take him back to his time or will he be stuck in a time that is not his own without anything that he knew before?
Book Two: Only For You-Ciel has now accepted that he is stuck in a time where his own is fictional, he has accepted it so much that he has fallen in love with a female that he has bonded with and now calls friend. After he places to light a man that she falls in love with in high school-can he still get her to love him, or will it be what makes her distrust him and never accept him as anything ever again?
Book Three: One Last Time-Serena and Ciel are now Adults, the time for being childish and playful are now done and gone. Serena's trust in Ciel isn't as weak as Ciel thinks it is as she holds back one detail from him that she doesn't want him to use against her-Her love for him. Instead she ignores what she feels for him, but for how long? Will he be able to get past her stubborn ways or will her stubbornness take complete control over her?