when Aki met you, he found meaning to his life. He wanted to spend the rest of his days with you. So, he left public safety. He didnt want to die and leave you heartbroken. So when he left he found another job, and moved in with you. He also noticed how you didn't like him smoking. You never said it outright but you'd give little hints. Like, you'd scrunch your nose a bit whenever you hugged him and smelt the tobacco in him. And you'd make a face of unpleasantness whenever you kissed him.
so, Aki decided to quit smoking. He threw all his cigarettes away, and in substitute he used sweets and your kisses to ween him off. And only did he truly realize how much he changed one night after a session of fun an love making with you. You laid in his arms as his hand ran through your hair.
"Yknow....I really did change alot. For the better, though." Aki mumbled, leaning in to capture your lips in a little kiss.