The synopsis given by MAL gives a pretty good indication of the base plot without giving away any spoilers, so out of fear of spoilers, I'll just advise you to look at that.
Story - 7/10
This story is not masterfully written or crafted like a fine piece of Victorian literature, it's just an interesting story that makes you want to watch on and see what happens. It's basically a story of bromance between two brothers that turns into... proper romance. However, the characters that interact with the two main characters (especially the brothers) make this an extremely interesting and captivating story. This is probably one of the shows that I was most excited to watch weekly in the Spring 2016 season. I would've given this a 7.5, however the ending was just... lazy and was an obvious pointer for "omg lol season 2 XDXDXDDXD", which isn't always bad, but if the change in the story that makes a season 2 viable is announced in literally 5 seconds, I have to deduct marks for pure fucking laziness. Especially since the last few episodes seemed like they were going somewhere.
Art 7/10
Very nice character designs and a vibrant art style that's hardly unique, however really aesthetically pleasing and actually pretty enjoyable. That's all I have to say.
Sound
No need for a mark here. The opening and closing songs are good enough, and the voice acting is pretty good. I don't feel the need to elaborate any further or associate this category with a numerical value.
Characters 8/10
This is where this show shines. I love the characters in this show. All of them. They have their own unique personality and thing that they bring to the show. It's surprising how much development and personal attachment you feel to the characters in just 10 episodes. Very well done in this category.
Enjoyment 9/10
This show is really fucking enjoyable. Like, really. You can't get through an episode without smiling like a fucking botched plastic surgery patient. That's all I have to say.
Overall 8/10
Very good anime with some extremely strong points. The ending, however, was lazy and just didn't make any sense with little justification to the decision that was made.
Would I recommend it? Sure, why not.
