Report 4

Plot
Arata wakes up to see a younger version of himself in the mirror, and realizes he has taken Ryö’s pill. Panicked and shocked that the story about the pill was actually true, he receives a phone call from Ryö. Arata tries to lie about taking the pill, but Ryö guesses the truth as he has been waiting outside and heard Arata’s scream in reaction to seeing his new self in the mirror. Ryö cheerfully explains this to Arata and asks to be let inside in order to continue the conversation about the experiment, getting Arata angrier and angrier at his intrusiveness.

Trivia

 * The events in this chapter took place on.
 * According to the novel adaptation, Ryō Yoake had been waiting near Arata Kaizaki's apartment since 4 am. At 11 am, the curtains of Kaizaki's apartment opened, and Yoake hurried to the front door.  Two minutes later Yoake heard Kaizaki's scream (when Kaizaki realize he became younger).  After estimating the time for Kaizaki to transition from panic to accepting reality, Yoake finally called Kaizaki on the phone.