Fandom, I implore you, please entertain the thought of CCG buddy cop antics. Juuzou and Haise good cop/bad cop routine. Quinx Squad all night stakeouts in Haise’s soccer mom van. Akira and Haise’s prolonged undercover cop shenanigans in which Akira realizes that she and Haise make for a very unconvincing couple but lordy, someone get her adoption papers because someone needs to be this mess’s mother.
Recently my neighbor above me, who is married to a Japanese woman, told me that sometimes Japanese men tend to take their wife’s last name under certain circumstances. For example, a little back then, if the wife’s family had no male successor, the husband would take his wife’s surname is he is the younger son or the youngest of his family.
In recent days, it is more for practical reasons, usually business-related. If the wife (’s family) runs a business, the husband would often adopt the wife’s name and therefore being “adopted” into her family or sometimes if she is from a prestigious family.