Volume 15 Bonus Report 1

Plot
During the night they first get to spend time drinking together in their adult forms, Arata, Chizuru, Ryō and An talk about Arata's and Chizuru's ReLIFE experiments. Arata learns that Chizuru suspected him of being a ReLIFE subject like herself, which helps him make sense of her weird behavior during that time. Before long, Ryō and An leave in order to give Arata and Chizuru some time alone.

Arata and Chizuru talk about the time when Rena and Kazuomi set them up to be alone at Arata's place, which makes Chizuru realize that she never properly returned Arata’s confession of his love for her during the night when they met again in their adult forms and remembered each other. So she does, telling Arata that he does not need to hold back like when he thought she was a high school girl, and they spend the night together.

Outside, An half-jokingly suggests to Ryō that perhaps they too should get lovey-dovey, but Ryō's serious response stops her cold. However, Ryō then turns the situation around by confessing that the reason for his previous snide remarks about An behaving like an easy girl in the class was that it made him jealous. An is completely taken by surprise as Ryō explains that he knew An repeatedly talked with him over the phone when he was working in the call center, and even more, that he has been in love with her all along but would not act on it as long as it risk distracting him from his support duties. Having taken complete control of the situation Ryō invites An over to his apartment, and despite her difficulties adjusting to the sudden turn of events she agrees.

Six years later Kazuomi and Rena are getting married. Honoka, Nobunaga and Akira are among the guests, and because Kazuomi has since started working at ReLIFE Laboratory, so are Arata, Chizuru, Ryō and An. Kazuomi applied to work there specifically because he heard his brother Takaomi Ōga speak highly of Arata's work as his support during his ReLIFE, though the he could not tell him much detail on what exactly it involved. Though Arata was very concerned of Kazuomi eventually finding out that he went to high school with him, Ryō managed to calm him down by pointing out that even so Arata obviously hoped that Kazuomi gets hired.

During the wedding reception Arata gives a congratulatory speech in his role as Kazuomi's co-worker. Honoka then insists that they all, including Arata, Chizuru, Ryō and An get a group photo taken together, and Arata gets another memento matching the photo they took on their graduation day, since he gained access to the original one before the ReLIFE subjects and staff members were removed via the company.

Kazuomi has to work keeping the nature of his job secret from Rena. He is quite exhausted from having to commute to the office every day to change into his high schooler appearance and back, which worries him due to the risk of it affecting his work. Though Arata and Ryō are aware of the possibility that Kazuomi might regain his memories from their high school days together, they are shocked as Kazuomi recognizes Arata using his own words from before Arata and Chizuru's Christmas date when Arata advises him to take care of his own well-being beside that of others. Kazuomi also reveals that he has already become suspicious of why the case files for Subjects 001 and 002 are being kept secret from him.

Kazuomi then changes the subject and invites Arata and Ryō to an evening drinking party to share some of their wisdom gained from their work with Honoka, Nobunaga and Akira, as they are all facing some struggles related to entering working life. Arata and Ryō agree to go, and Arata realizes that his wish from the final evening of his ReLIFE to be able to get together with his friends again some day has come true.