Status/cultural, money, age gap don't mean anything

A Japanese woman has a foreign boyfriend, but who she really has a good relationship with, despite cultural differences. the mom says something wise 

"japanese, foreign, it doesn’t matter-of course people are different. But itns’t living with someone recognizes those differences little by little, and accepting them, and sharing them? That is what becoming a couple means. And then becoming a family." this is also what the mom discovered with her Japanese husband that he enjoyed japanese breakfast, but she fell in lvoe with the foreign breakfast of having toast in the morning by watching tv -but she holded back for the sake of her husband, but eventually busrted out loud and said "enough." she really wanted this, and to her surprise he had no toruble with accepting this, but asked if she  could at least make him miso soup every monring at least- as he enjoyed her miso soup a lot. And that she shuld do whatever she wanted if it made her happy. Then she had toast every morning from then on and he had his miso soup only :)

He has a rich family background, happy home and his parents loving one another very much and very openly.

She has a father that died of her only in a young age of 9,

a mother trying to deal with her moaning of him by buying a lot of things then ending up swimming in depth...making it a trouble for both herself and her daughter, even the daughter working after school to try and pay back to the depth...but they are unable to, and her mother rarely coming home from work, now even for the nights, as she overworks now. She starts to feel lonely and she has poor eating habits as she tries to save money on food.

Age-gap,

Quotes from the series:

"Don't wait. for a mitral, walk toward it.
go to the future with zero expectations"

"i know i am not at the age
where i can take things slowly,
but i am not in a rush right now.
You are the only one who helped me realize it doesn’t matter when starting anew.
so I want to do things slowly.
i want to take plenty of time to learn more about you.
and I want you to learn more about me too."

And a few a bit awkward kinda moments, but not too bad :)

About man and a deaf and seeing disabled kid.
A woman who suddenly dies, leaving this kid back with no family left to care for her.

Her co-worker comes to check on her kid that is all alone in the apartment by herself-
the guy who is a person who normally have a very surface-sorta job not caring much about depth of life, and loaning money he is in huge depth for.

He at first sees if he can find any money left behind in her apartment, but can't see the kid barely being able to care for herself or at least is at high risk when she can't even see nor hear him coming in...it shocks him,

pretending to be the father to the rent loaner as an excuse as she stops by to ask for the late rent- he says this so he can keep looking for possible money.
he ends up staying a few days, slowly figuring out how sweet this girl is despite her hardships of her disabilties , she seems so happy about life; as her more natural perosn opens up -when he get closer to her winning over her trust and even eventually....love.
and he too developes a love for the sweet kid,
they get through a lot, as he struggle to even at all be at a place to barely be able to take care of himself- and then let alone also a kid...
but finds out how much richer his life has gotten, with her in it and finding love for this kid, eventually adopting her and she wanting him as well as a dad-

they bond despite them being from two very different worlds, like father and child