Job-hunting student Keiwa Sakurai fails yet another interview. His older sister Sara treats him to Tanuki soba to encourage him. However, instead of actually encouraging him, she is obsessed with watching the latest livestream of her favorite celebrity influencer, Neon Kurama.

At the same time, a mysterious transparent wall appears and seperates the two siblings. A monster known as the Jyamato appears in the area and attacks Keiwa and other unlucky people trapped inside the area. Keiwa also runs away from Neon, who was streaming in the area. Just what in the world had happened?

Then, Ace Ukiyo appears in front of the two, and approaches the Jyamato...