First of the anime is great and the very first episode hooks you on pretty good. I've liked the story so far and have been very intriguing. It has a very good first episode & things turn out to get be better and better. It does have some humorous parts where the main character goes into the girl changing room by accident, so there is a little bit of ecchi present for all those ecchi fans out there. If your looking for a fan service anime those anime does not have much of fan service close to none. If you are looking for a good harem anime with lots of beautiful girls with different personalities then this anime is for you.
Why its so Good:
-First & foremost the story starts out strong and is quite easy to follow
-The story is quite interesting in many ways it has large twists & turns which you probably never expected (Episode 4)
-The characters all have a different personalty. There not your typical boring old harem characters
-The story is made in quite a unique way with lots of girls & a caring brother and how he overcomes the feat of improving the atmosphere around him as a test student
-If you like anime with very little ecchi & some humor this anime is definitively for you and you should check out the first episode