Watashi ga Motenai no wa Dou Kangaetemo Omaera ga Warui!, Naze Toudouin Seiya 16-sai wa Kanojo ga Dekinai no ka? Recommendations
Being popular, getting a girlfriend..it's all a troublesome sea of relationships. In NazeToudouin, the MC has gone his whole life without a girlfriend and the manga portrays his attempts at getting one, in WataMote, instead of a girlfriend, she's just trying to be popular. Both protagonists want to create relationships with other people, and their stories show their painful struggles.
In both series, there's an experimental feel when it comes to characterization. The main protagonist from both series have little friends and tries to make the best out of their social life. Despite their attempts, they have face many challenges when it comes to interacting and engaging in social affairs with others. Both series explores youth in a rather peculiar manner in general.