He did make moves on Nozomi a few times after Kimio leaves, he gave up after a few rejections of "I don't have time today" unless it's hanging out all together. Otherwise, all that time after school is saved for "showing each other" sessionsLikely an incoming, "be honest with yourself and each other" speech incoming. Toba is rolling in pussy anyway, if he wanted it from Shiina or Komine he would have made moves long, long ago.