The story is good with some big plotholes. Overall the series is unrealistic, too short, and sweet. Not-so-normal things happen quite easily in the series.
Eg. The 3 brothers getting together with their significant other was shown just like that without a proper backstory.
Especially the eldest brother following in love, which makes me think that it is quite unrealistic., It's like things are happening at their own pace, at their own time which actually just doesn't match with the story.

Note. Please ignore my music rating.