Is Kagami no Kojou good to watch with a friend?
One sitting. Kagami no Kojou (Lonely Castle in the Mirror) is a film from Fall 2022 by A-1 Pictures Inc.: 1 episodes, about 1.9 hours in total, finished, 7.73/10 across the listing sites.
Watching it together: one sitting. It is a film (about 1.9 hours), so the whole thing fits one evening — the easiest kind of anime to agree on. Rule: type MOVIE → one sitting.
This verdict comes from rules over the title's format, length and tags, not from a review — the rule that fired is named above.
The facts
- Type
- Film
- Episodes
- 1
- Episode length
- 116 min
- Total time
- about 1.9 hours — one evening
- First aired
- Fall 2022
- Status
- Finished
- Studio
- A-1 Pictures Inc.
- Score
- 7.73/10 across the listing sites
- Tags
- coming of age, drama, fantasy, found family, friendship, isekai, mystery, school, seinen, time travel, gaming
Data from anime-offline-database (ODbL) as of 2026-07-04; the score is the median of the scores the anime listing sites give it, on a 1–10 scale. Also listed as: The Solitary Castle in the Mirror.
Do you and a friend both want to watch Kagami no Kojou?
Queue Up reads two public AniList lists and shows every anime you both have on Planning — with Kagami no Kojou flagged if it is one of them — then picks tonight's with a weighted roll or a bracket.
Or open it on AniList or MyAnimeList.
More like this: coming of age · drama · fantasy · found family · friendship · isekai · mystery · school · seinen · time travel · gaming.
Quick answers
- How long does it take to watch all of Kagami no Kojou?
- About 1.9 hours — one sitting.
- How many episodes does Kagami no Kojou have?
- 1 episode of 116 min.
- Is Kagami no Kojou finished?
- Yes, Kagami no Kojou is finished (1 episodes), so you can watch the whole thing at your own pace.
- Is Kagami no Kojou good for a group?
- Better for two than for a crowd. Kagami no Kojou is tagged drama; it rewards paying attention, which a group rarely does.
- Where is Kagami no Kojou listed?
- Kagami no Kojou is on AniList (id 145739) and MyAnimeList (id 51116); Queue Up keys it by its AniList id and shows it when it is on either of your lists.
Queue Up is a free tool: enter two AniList usernames and it ranks the anime you both want to watch, rolls one for tonight, runs a bracket to settle it and finds new anime that fit both of you. List data from AniList; title data: anime-offline-database (ODbL), dataset of 2026-07-04; page updated 2026-07-04. Not affiliated with AniList or MyAnimeList. Queue Up is a Somebody Decide program. How it works · Legal & privacy · All lists