Below are a collection of frequently asked questions regarding Mei Hachimoku's novels.

Any order! There's no real chronological timeline for them as they are their own contained stories and can be enjoyed separately. The most used read order is the release order, which is Summer -> Spring -> Autumn -> Winter. You can choose any order you want, since the only thing you'll miss out on by not reading in release order are small references to previous entries that don't have any impact on the story and purely serve as references fans of Mei Hachimoku will get.

Every person has their own opinion, however the main opinion amongst novel readers is that you should read the novel, not watch the movie. Characters are far more developed, plot points are more explored, and overall the story is much better written and more conclusive. If you've already watched the movie, give the novel a shot, as the amount of changes made in the movie almost makes it an entirely different story. You can download a PDF of the novel here.

Nothing has been confirmed yet (as of 2025/02/24) so an adaptation is always possible. However, they do not have an adaptation as of now. Wait For Me Yesterday in Spring will most likely have a TV anime adaptation, as the story is better suited for that medium, and An Autumn in Amber, A Zero-Second Journey will most likely have a movie adaptation.

No. There is an extremely slim chance of Tunnel to Summer getting a re-adaptation. A fresh adaptation has only been done for very popular series, namely Fullmetal Alchemist and One Piece. Whilst Tunnel to Summer is moderately popular, it is no where near the popularity of those series, so a re-adaptation will not make much sense, especially if you look at it from the perspective of a company whose main objective is money over everything.