me tooo
http://www.mangago.zone/read-manga/simplified_pervert_romance/?QOqU
A lone wolf with a delinquent streak, Kashima enters high school with a reputation that scares off his classmates. Little do his classmates know, Kashima is not a typical delinquent: he is a masochist that enjoys being hit by guys. Ryouji Sanada, despite Kashima's reputation, goes out of his way to talk to Kashima on the first day of high school. Confused by Ryouji, Kashima rebuffs his handsome classmate. But, when Ryouji intervenes in one of Kashima's fight (and attempt to get off), Kashima realizes that Ryouji might just have a secret "perversion" too...
Dunno if you'll like it but that's all I can think about despite having read lots of genres :'D Yuki is a loner and the seme (kashima) is popular so that kinda fits the description too :3 It's also so cute ARGHH
Oh wait the seme is Ryouji (Yuki's full name is Yuki Kashima)
Hit me up with the classic popular boy x loner boy and not too long please