A Gem In Need of Polishing

Aya and Kei find out that they share the same birthday. Kei agrees to celebrate their birthday with Aya after learning that she has never had a proper birthday celebration. Things don't go as planned and Aya goes to Hayato, where she can freely expresses her thoughts. This irks Kei but Hayato threatens to be the one to make Aya happy if Kei can't man up.