Kusuriyubi no Kyoukasho 2

It's a new school year for our guy. He is feeling a bit down since he doesn't have a girlfriend. He met a guy (main guy from #1?) who soon became his friend. He has to invite a girl to their new lunch club. Which of the 5 girls will he pick? After that, there is summer and winter loving to enjoy. [Edited from Li's Fun House]