I don't usually watch anime, but when i do is because i feel attracted to their beautiful visuals. And let me tell you straight away that Nisekoi lacks good storytelling but it compensates that with charismatic characters that are very familiar to anyone who loves Anime and good sections of comedy.
Nisekoi it's about a forced romance between Chitoge Kirisake a beautiful(Like any other character in any other series...) blonde girl from America with Japanese roots and Raku Ichijo. Both are the sons of the most powerful Yakuza family leaders in Japan. Both Yakuza gangs are in war but in an attempt to make peace and stop the war they force each others son / daugther to engage in a relationship.
And that's it. Both Chitoge and Raku doesn't like each other in the beginning but they start to make a good relationship in the process. Most importantly Raku is in love with Onodera Konozaki a beautiful and gentle girl from his class.
And there's a backstory... Raku fell in love with a girl he met in his childhood, he keeps with himself a nice golden lock that works like a necklace, in order to find who is the girl from his childhood both the girl and him should open his lock with a key and discover who is the girl that he fell in love at that time. Because at the moment he doesn't remember how does she even look like, or his name. And as the story continues the possibilities are increasing.
The story isn't very good, the characters are like any other characters you've meet in any other romance anime you've watched but it has a lot of funny moments.