My theory is that it wasn't just him that got rewound but amada too and is quite obvious that the Hidaka has also been traveled back in time
Comment by Lost from Rizz on Shujinkou no Osananajimi ga, Wakiyaku no Ore ni Gui Gui Kuru - Chapter 2
2 Replies
@Lost from Rizz 3 light novels in and only one other character has shown signs of being rewound but nowhere near as clearly as him, they seem a little fuzzy about it like it was a barely remembered dream. Which isn't to say no-one else has been rewound.
@CeEn I have read it and no one remembers they are just strange bunch