Isako hatches a risky plan, and Daichi's newly rekindled friendship with Fumie may suffer as a result.

Following clues left by Haraken's former research partner, Haraken, Fumie, and Yasako search for any new leads.

Yasako searches for the place she met 4423. Afterward, she deduces that the place was a virtual space that was deleted.

Haraken and Fumie discover early accounts from previous denno users. Later, Yasako visits her comatose brother.