Kasou Kowloon kara no Dasshuu

The main character, Tsubaki, who woke up in a strange place, had lost his memory from leaving the house to waking up here. Meanwhile, unfortunately, the place where he was entangled in a thug is helped by his brother and sister who call themselves "Asagi" and "Hanada". The two who understood the situation promised to cooperate in order for Tsubaki to escape from this "virtual Kowloon". Why did Tsubaki come to the virtual Kowloon? What is the true identity of Asagi and others who are willing to cooperate with strangers, and what is "Virtual Kowloon"? When everything crosses, the story overflows with pieces of truth.