
It was very cruel of the younger nanny to allow the child to call her mom, though seme is also to blame for being so absent.

The seme didn’t know where his kid was for like three years iirc? By the time the uke’s “mother” (in quotes because to me she is no mother) finally revealed where she was keeping him, the child was already calling the nanny mom, which the seme corrected right away. But the nanny started immediately trying to act like a wife to the seme as well so he chose to relocate and he couldn’t bring his kid with him since that would mean having the nanny over again and he couldn’t just get rid of the nanny right away because of how attached the kid had become to her. So in reality, the only ones to blame are, firstly, the uke’s “mother” and the nanny for not staying professional and implementing boundaries. She had the obligation to inform the child who his parents were really, even if she had to make up reasons for why they weren’t present with him yet.

Idk if it’s because we as readers know more than the MC or what but I swear he’s been told about the stalker and grifters before. Feels like that’s been rehashed like three times at this point…

He knew about the stalker and grifters, he didn't know about the timeline or who the stalker harassed. He knew info was leaked from pictures but didn't know who in the group was stalked because of the pictures. He also didn't know how long it's been. Basically, information has been slow released to him, but we can piece things together because of the perspective we see as readers. Hope this helped.
It’s going to be so painful when he goes back to America. Imagine being the uke and thinking “he’s going to go back home to his life and his friends while
I’ll always be stuck here” gotta love sugary sweet stories with a touch of angst