About the Ecchi
Well, after I watch the hole anime (with a lot of difficulty, because the story wasn't very good) I saw something cool. Everyone may say this is a bit close of To Love Ru, and I actually would say that too. That's because some of the ecchi and sexy scenes are close to To Love Ru, and they are very good. But there are almost none of them.
About the Story
Just don't watch it. What the story focus is to keep showing the difficulty for some girls to show their love to a boy. You may think about some lots of ecchi scenes, boobs and everything, but no. All you see is "Oh, I like that boy" and "Oh, you like him too? You should confess your love to him!" AND THAT'S ALL.
At the same time the story that's written upside is happening (what a interesting story), it tells about a little fight between planets. I can't tell not much about this, because I didn't focus a lot in this anime. But what I can say is that this isn't interesting too.
Characters
Boooooooooring. Like I sad, when one of them is the coordinator of the ecchi scenes, the others are just like "should or i should I say that I love him? The other girl is so much beautiful than me, so I have no chance." I just like a bit the alien one, Eris. The protagonist is boring too, he is just like... Yuuki Rito, but with no perverted scenes, no comedy and no cool.
Art and Sound
Those are acceptable. I don't have too much to comment about it, but at least it is better than Dragon Ball Super. (hehehehehe)
Enjoyment
Ok, maybe I should play Guitar Hero, GTA, Minecraft, I should clean the house, study while watching this anime. You won't concentrate it even if you try, because you won't like. I'll just give a bit highter grade on this because I played videogames while watching this, so it wasn't soo boring. But i wouldn't like watch this anime with all my concentration in it.
Observations
Well, I would say that's an anime to you to watch at the same time you keep playing video games, or doing something. It is one that you think. "Oh, I will watch this anime to increase my animelist". That's All.
Sorry for the bad english, I don't live in an english speaking country.