Kagerou Daze VI -over the dimension-'s official English translation has Haruka mentally noting Kido "didn't seem too much younger than I was". In comparison, Seto is described as "he looked about one or two years younger than [Haruka]". Though this makes Kido and Seto the same age chronologically, Kido would also be some months older than Seto, with Seto being the youngest of him, Kido, and Kano.