Read Hajimete no Gal Manga:
High school boy Junichi Hashiba laments not having a girlfriend as his classmates have seemed to be pairing up everywhere. His single unattached friends force him into boldly confessing his love to Yukana Yame, a beautiful "gal" at the school. Although Yukana easily determines that Junichi really just wants to lose his virginity, she agrees to be his girlfriend. Junichi soon attracts the affections of other more.. girls who have known Junichi or Yukana for a while, including his childhood friend and neighbor Nene, Yukana's gal friend Ranko, and the school's madonna Yui.