Mangas like “Ai o Ataeru Kemonotachi” where a slave/ abused person is bought/saved by a nice person/people. The slave then is all confused by how well they are being treated, but scared to be punished or thrown out so they’re really timid.
Uhh maybe this? More like he is brainwashed and manipulated and it’s sad... http://www.mangago.me/read-manga/sabi_no_yume/
maybe this short one fits
http://www.mangago.me/read-manga/fuson_na_hana_o_aisureba/mi/mi_chapter-3/
uke-chan is a sacrifice (bride), before he was also used for sex, luckily our god is kind
http://www.mangago.me/read-manga/mauri_to_ryuu/
not sure if this one count too. pityful uke (insecure, trauma), chased by a very kind seme
http://www.mangago.me/read-manga/sagatte_omachi_kudasai/
I’ve started reading Cardcaptor Sakura manga and I’m confused by the timeline. How is Sakura a 4th grader in December (Li first comes) in chapter 9, but still a 4th grader next year in December for chapter 20 (Li and Sakura in the play)? Chapters 1-25 events make it seem like it’s been over a year so wouldn’t have Sakura and co. all gone up a year in that time?
The plot is about a girl who goes on a blind date but is drugged by her step-sister. The guy who was her blind saves her from from a sleazy guy, he later sleeps with her. The next day, the two get married with the girl not remembering who she slept with. The guy turns out to be the second son to a big CEO and his brother hates him. The girl becomes his secretary.This WEBTOON was on mangadaily and later on manga rock. It disappeared and I can’t find.
I’m looking for a specific manga. It’s about a single dad with two young kids, a boy (first born) and girl (second born), who hires a friend of his to act like a nanny for his kids. His son doesn’t want a nanny and thinks he can take care of his sister himself. The nanny is a beautiful man who looks like a beautiful woman. I’ve read the beginning of it but I can’t remember what’s it called.
Beware, it is not what you are looking for exactly. But it has enough similiarities to maybe shorten your wait.
http://www.mangago.me/read-manga/home_drama/
Good luck!

I remember reading a bl manga where the seme is visiting a friend in Japan but he doesn’t speak Japanese. His friend played a joke on the seme by telling “will you marry me” in Japanese is asking for directions. Seme gets lost and runs into a very shelter Japanese young man and asked for directions by is actually saying “will you marry me” uke says yes and takes him home and they sleep together with seme thinking it’s part of Japanese culture.
That's sound so funny and interesting. Let me camp here with you for an answer.
I found it. It’s Uchi no Darling Gaikokujin (Yaoi)