After Yukinori's father collapses, he must return to Fukuoka to help run his father's welding shop, despite knowing nothing about the business. This causes friction with Maki, the factory manager, who find's Yukinori's incompetence and lack of commitment frustrating. However as Yukinori improves as substitute president, so does his relationship with Maki... Side Story: Love Lies in Odd Numbers Agari is invited to his ex-boyfriend Minoru's wedding and asked to film, as he is a professional videographer. Furious, he decides to go to the wedding just to punch his ex in the face. On his way there he meets Yuuki, a hairdresser and fellow ex of Minoru's who has been invited to do hair. Together they get drunk and plan revenge against the man who broke their hearts.