If you liked
Kiss x Sis
|
...then you might like
Aki-Sora: Yume no Naka
|
Same premise, boy with a sister complex although there are two sisters who both share an interest in their younger brother; they are unrelated by blood so they don't try and hide their affections. It's more of an ecchi comedy with tons of fan service and the sisters have the Loli effect going for them. Animation is good too ;)
If you liked
Loveless
|
...then you might like
Kuroshitsuji
|
Both stories center on a particularly strong male bond which ties the two main characters together in almost a master servant relationship. Both plot lines revolve around a terrible incident happening to the main character at a young age. And while Loveless tries to lighten the melancholy feel with its rather ambiguous take on what it is to be loved or not loved at all; it tends to sully the true nature of humanity which is very evidently portrayed in the Black Butler or Kuroshitsuji.
If you liked
Kodomo no Jikan (TV)
|
...then you might like
Hatenkou Yuugi
|
Both have a lolita plot based story, but while Kodomo is more of a slice of life comedy, Hatenkou Yuugi is more action and romance.
If you liked
Clannad
|
...then you might like
Myself; Yourself
|
Slice of life, Romance mixed with side stories for each individual characters. Both animes are tear tearjerkers and very sweet dramas, Myself, Yourself has a much happier ending though.