Its the brothers from Lovely Swords Girl! Although they were not all biologically brothers here the vibe still is the same. The characters personalities were somewhat the same with their characters in Lovely Swords Girl (well it makes sense since the writer/director is the same). Because of that, I actually thought that the leading lady would end up with the "older brother " from Lovely swords girl (the poster that i saw was different from what they used here and i didn't watch the trailer). Honestly, I only watch this because of Li Jia Hao. I though he was going to give a good fight for the Leading Lady, but it turns out he was just a MALE-FRIEND and it was conveyed immediately in the series (i don't think this is a spoiler cuz you ought to know once you watch a few episodes). I WAS ROOTING FOR HIM TO BE THE ONE ENDING UP WITH THE LEADING LADY, cuz of the things he have done and all, i also thought he'll fall in-love with her as well but.... oh well. All of them have their own pairs in the end so its a good ending.