It’s hard to choose only one. I have lots of favourite yaoi couples. But the first one that came to my mind when I read the question was Ueda and Aki from Honto Yajuu. They are unproblematic, loyal to each other and so lovable! You just can’t dislike them! 1 reply
I like problematic relationships where the pair (or one of them) have issues expressing their love, lol
Yashiro and Doumeki - Saezuru Tori wa Habatakanai
Takaba and Asami - Finder
Morinaga and Tatsumi - Koisuru Boukun
Yokozawa and Kirishima - Sekaiichi Hatuskoi
But I like the sweet ones too
Iwaki and Katou - Haru wo Daiteita
Kaburagi and Onoe - ...... reply
Shin and Seiji from "Boku no Omawarisan" because both characters are "pure" (seme is a loveable horndog, wink wink), kind, and truly loves and care for each other.
Edit: Also, uke is hilarious and seme is an adorkable stoic giant. 1 reply
Top 4 ( I can't pick one, loved all )
1. Haeyoung and Sunyool - From Points of Three
2. Haemin and Youngwon - Viewfinder
3. Hyunho and Gyul - I Have a Boyfriend
4. Juhyun and Jigoo - Hush / My last love Scenario reply
Hayakawa and Kon-chan from Hishakaishindo had one of my favorite chemistries and development, very realistic and honest: http://www.mangago.me/read-manga/hishakaishindo/
San and Eunjae from Fate Makes No Mistakes are so hot together and the progress between them is so cute and gentle: http://www.mangago.me/read-manga/fate_makes_no_mistakes/
Harun...... 2 reply
I thought it was Seven Days http://www.mangago.me/read-manga/seven_days/. But I'm not entirely sure. It could have been Only the Ring Finger Knows http://www.mangago.me/read-manga/only_the_ring_finger_knows/. It could have also been Running On Empty. http://www.mangago.me/read-manga/running_on_empty/
I honestly don't know for sure. It's been more...... reply