If you liked the Aria the Animation anime, the Anime-Planet community thinks you'd like:
For the athletic and outgoing Yohko Yamamoto, life is all about grabbing her quarters and putting her skills to the test; which is why for her, piloting a space ship is as easy as playing in the arcade! Using a supply closet in their school as a portal through time, Yohko and her friends travel between the years 2000 and 3000, having fun adventures, battling in space, and becoming closer as friends.
Yamamoto Yohko and ARIA take a fantasy/sci-fi setting and rather than focus on the setting, focus on the characters. Yohko and ARIA both take time to strengthen their cast, especially through chracter interaction. In addition, both shows have a very calm and relaxing atmosphere and tend to switch between happy, fun episodes and more somber, melancholy ones.
The future is dull and bleak without the existence of Steel Angels. The rain pours hard and heavy on more days than not and has an acidity to it that keeps most tucked away in their homes. Life is especially dull in the home of High School students Kurumi, Saki, Excelia and Karinka. When Kurumi comes home from a school club meeting with a blush to her face and a lovestruck expression, all the girls gather around, prodding for information. Kurumi has fallen head over heels for a boy named Michihito Kagura, and with the support of her friends she gathers the courage to tell him. But is Kurumi's love strong enough to withstand what fate has in store for her?
Both of the shows are, for lack of a better word, braindead to watch. They have the very lax and peaceful atmopshere, where the show thrives on just mellowing out the viewer with not much at all. They are both a very relaxing watch. If you liked one, you'd like the other.