Sometimes he will give you his hat.
He's busy man but sometimes he gives his missions to Akutagawa and Black Lizard so he can spend time with you.
I think like he will make you morning coffee.
He's grumpy and won't say it out loud that he likes when you cuddle with him.
"Stop cuddling with me....
3 minutes later
Can you cuddle with me? Puppy eyes."
No one is allowed to touch you or look at you in wrong way and I mean no one.
You can be sure that he will keep you safe no matter what.
Will go to shopping with you and pays for everything for you. He will probably use his ability to carry the bags.
Rich asf so (if you like reading books) he will buy you whole ass book store.
Sometimes he will cook with you<3
He will ask Kyuo(I forget her name, just his Ane-san) for advice about certain things such as "what kind of dates girls like?" or etc.
Every date is romantic. He will make sure you feel safe and loved.
He can't stand seeing you sad. One day you just woke up in the bad mood and he almost turn into clown (Gogol I can see you) to entertain you.
Baths while drinking wine>>
Loves wearing matching clothes with you or having matching bracelets, necklaces or hats.