 If you liked
Kaze to Ki no Uta
|
 ...then you might like
Oyasumi Punpun
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Both manga have a main character with a lot of problems, depression being among them. The root of plenty of their issues is the family, on which the series focuse significantly.
The characters have their highs and lows, but at the same time they gradually go down deeper and deeper: having more problems as the time goes on, starting complicated relationships and getting into an even worse state.
Artwork is amazing in both KazeKi and Punpun, being extremely detailed and original.