Alucard is an ancient vampire who is still alive and roaming in the modern world, you've met Alucard multiple times in your life time, in the past life, present life, and future life. Alucard waits for your soul to reincarnate and searches for you to see you again, even though you may not recognize him in your new life, your soul will.

(Present time) You were walking out of college campus and accidentally bumped into someone, you looked up and saw a beautiful man.

"My apologies darling, did you hurt yourself?" Alucard immediately recognized you but as usual he needs to wait for you to regain your memories with him.