Hourou Musuko, Hoshiai no Sora Recommendations
Hourou Musuko's main plot and Hoshiai no Sora's 8th episode have very similar theme about adolescence and gender problems.
Both anime have slice of life elements and even the art style and pacing is similar. It's as if some characters have grown up and gone to the newer series.
Both are showing adolescene in a similar way - they don't try to make it seem beautiful, and they talk about the same things. They both question gender and contain LGBT related content.