Gives similar feelings. Friendship, love, gay, tragedy, dinamic, chemistry, unique plot. And just wow. Also there are Eita and Ueno Juri too.
Both of these dramas have characters that deal with gender identity disorder, domestic violence, suicide, bullying, rape, and incest. Last friends story centers around five main adult characters while Gloomy Salad Days consist of mini stories from high school students.
it's the same kind of story, about a group of friends trying to overcome hardships together ; and Eita is in both dramas ;)
These two dramas are seemingly quite different, but I think they have some themes in common, such as people working through various life issues and the characters trying to help each other through it. There's a theme of family here, in Kahogo no Kahako they are related by blood, but in Last Friends, the friends are like family. Last Friends is quite a bit darker in terms of the issues the characters deal with, but if you liked Kahogo no Kahoko, give Last Friends a try!