 If you liked
Midori no Hibi
|
 ...then you might like
Nogizaka Haruka no Himitsu
|
Both involve a secret between two people who end up drawing closer to each other.
They both have some adult content, but Nogizaka is more of a fan-service tease, whereas Midori no Hibi there's brief & humorous clear scenes...
If you like Midori no Hibi, you'll like Nogizaka!