The Day We Bare Our Fangs Episode 16

Mary, the police officer, goes to her second job at a dream palace. Takumi crashes in on her job to take out a weapon smuggling ring. The gangsters try to run but Katana fights them and their heavy metal. When Takumi catches up him and Katana end up fighting. After the fight ends Katana and Takumi flee before the police come. The next day Aiko's father wants everyone (with a techode) to come to his house for dinner. Is there a hidden meaning behind this?