In both dramas the female lead is seen as cold and is unwilling to let other people into their life. The male lead help them overcome the past trauma and move forward, and in the end they develop sort of a sweet spot for them in their hearts. In both dramas the main leads have a past together about which they learn more as the story unfolds.
Similar to the rivalry in Bad Buddy, in I Told Sunset About You the main characters also used to be rivals, but learned to put that behind to start a beautiful relationship, which you also can see progress in the continuing of the series called I Promised You The Moon. The story is not repetitive like I usually find a lot of BL's are, and the acting in both is wonderful. The actors managed to portray all of the feelings so vividly, it was shown in a very realistic way. The series features the importance of communication and the not-so-often talked about sides of a relationship which is very refreshing to see.