Girlfriend, Girlfriend Season 2

Mukai Naoya has been in love with Saki Saki since elementary school, and he is overjoyed when she finally admits his feelings. However, one day, Minase Nagisa, a beautiful girl, confesses to him! Naoya decides to go out with both of them because she doesn't want to choose between them. What will happen to this morally ambiguous love triangle? What will happen in the second season?