Welcome
-Scary, Quiet, Delinquent, Gloomy, "Rumoured",
Manly Seme/Uke
-Cute, Friendly, Popular, Extrovert, Girly Seme/Uke
Opposites Attract
This list does not include mangas where one of the characters is "scary" and the other is just normal and vice versa (cute MC with regular guy) all mangas will have "opposite" personality traits
No vintage/old mangas included
Feel free to give any suggestions
When seme (or male lead if it's shoujo/josei manga) regretting all the bad thing he has done (especially to his significant other) and trying to make amend of his wrongdoings. Some of the list has uke that is very forgiving, never forgive or died. I don't mind whichever ending, it's just the feeling of regret, from doing bad things or taking things for granted.
Most in the list are yaoi/shounen-ai genre, that's why I used term 'seme'. Feel free to add if you have anything similar in mind.