So i want the parents of either the uke or seme to find out about their child's sexuality.
It can either be before or after the couple is formed. I know there was one where the child could predict the future through dreams. He dreamed he was gay and the family was supportive. Kirepapa is another one where the family finds out.

I don't care whether the parents approve or not. But there has to be some reaction and not over in a single page. It doesn't always have to be parents either. It could be a brother or sister. There is another one where the sister finds out about her brother's gay relationship and becomes supportive.

Also, if you guys could tell me the title of the two examples I posted...THANKS!!! 😁

There's an old saying my late grandma taught me. When you're ten, they call you prodigy. When you're fifteen, they call you a genius. Once you hit twenty, you're just an ordinary person. About three years until I'm ordinary. Man... I can't wait to be ordinary.

There's actually quite a few, but I'm going to have to think on it for abit because my brain's really noy functioning now. The more obvious ones I guess, would probably be:

U Don't Know Me - Childhood friends, your parents are my parents sorta thing.
Warui Koto Shitai series - It's like a world where everyone's gay.
Only The Ring Finger Knows - That one's mild.
Let Dai - It's pretty angsty though.
Katekyo! - Their entire family knows. Both families.
Suutsu wo Kita Akuma and other books in the series - I love the gay half-brothers thing, but it's pretty incestuous.

I'll have to leave it at this first while I ransack my brain for more, hopefully this helps a little. There are actually quite a couple of manga with Fujoshi sisters... It's like all girls would squeal if they found out that their brothers were gay. Okay, frankly, I'd heartily congragulate my brother if he told me he was, but I've got no such luck.

thanks~ i found a whole bunch i want to read!! please keep updating! You're awesome!! 😀

There's an old saying my late grandma taught me. When you're ten, they call you prodigy. When you're fifteen, they call you a genius. Once you hit twenty, you're just an ordinary person. About three years until I'm ordinary. Man... I can't wait to be ordinary.

The one about the guy with the forseeing dreams is Koiha Ina Mono Mouna Mono

I've actually read several where a sister finds out. Here's a few, may not be the one you're thinking of though. I'll edit if I think of more.
Dokidoki Renai (this is the second half of the story so you may want to read
Harete Bokutachi wa first)
Ashita no Kimi wa Koko ni Inai
Elektel Delusion

Other family members are aware/find out:
Sannin Gurashi
Sumanai!! Masumi-kun
Challengers

this thread has a bunch more : http://www.mangaupdates.com/showtopic.php?tid=14098&hl =parents

Family member/s find out:

Suki ni Naccha Ikenai Hito
Boku wa Kimi no Tori ni Naritai
Deki no Ii Kiss, Warui Kiss
Family Border

Many of the following feature an arranged marriage between 2 males, so not only do family members know, at least one of them set up the arrangement:

Hanayome-kun & Hanamuko-san
Royal Fiance
Boku no Ano Ko
Yome ni Konai ka first volume has a reveal to parents; second volume features a different couple that includes arranged 2 male marriage

(I know I've read at least one other with a sister who discovers & later supports her brother but I can't recall the title or mangaka... I'll keep trying)