Images: 1, 2, 3

I think Hachi is best suited for Takumi, because she's spoiled, selfish, jealous and Takumi is the perfect guy who can both handle her attitude and keep her happy.
I'm not sure whether Takumi truly loves her, but he doesn't hate her either and I was impressed by his sense of maturity when he took responsibility for Hachi's child and agreed to take care of the baby and the mother. I thought he'd throw them away since he's a famous guitarist, but he actually started a family.
Their relationship has many ups and downs, especially since Hachi wants Takumi to always stay at home, but at the end of the day, they're happy together.

About the background, Nana covers are almost all real life photo with manga drawing (memorable mentions: 1, 2, 3) so I decided to keep the style because I've rarely tried real life & manga together. This is actually the 2nd time doing it, first was a long time ago and the submission got deleted from MT (all hail past standards).
I used some filters and textures to make the scans blend in and I'm honestly proud of my work.

Best way to describe Takumi and Hachi's relationship:
"She's not broken,
She's just a baby.
But her boyfriend's like a dad, just like a dad."