 If you liked
Natsu no Arashi!
|
 ...then you might like
Steins;Gate
|
These are time travel stories, with characters jumping back and forth in time. The resulting present is the optimal outcome for the protagonist.
He is mainly surrounded by girls, and a cross dressing character.
The titles play with time paradoxa and choose different ways for avoiding inconsistencies, which makes it interesting to compare the 2.