Oreimo
Japanese light novel series
Oreimo, short for Ore no Imōto ga Konna ni Kawaii Wake ga Nai, is a Japanese light novel series written by Tsukasa Fushimi, with illustrations provided by Hiro Kanzaki. The story depicts high school student Kyosuke Kosaka who discovers that his standoffish younger sister Kirino is actually an otaku with an extensive collection of moe anime and younger sister–themed eroge she has been collecting in secret. Kyosuke quickly becomes Kirino's confidant for her secret hobby.
ASCII Media Works has published 17 volumes in the series under its Dengeki Bunko imprint from August 2008 to September 2021. A manga adaptation drawn by Sakura Ikeda was serialized in ASCII Media Works' Dengeki G's Magazine between 2009 and 2011. AIC produced a 12-episode anime adaptation in 2010, with four additional episodes streamed online in 2011. A-1 Pictures produced a 13-episode second anime season in 2013 with 3 more episodes streamed online later that year. Bandai Namco Games developed three visual novel video games from 2011 to 2013 for the PlayStation Portable and PlayStation 3 consoles.
Plot
Kyosuke Kosaka, a normal 17-year-old high school student living in Chiba, has not gotten along with his younger sister Kirino in years. For longer than he can remember, Kirino has ignored his comings and goings and looked at him with spurning eyes.
Begin with the source’s own compact description: “Oreimo” is japanese light novel series. The dossier treats that line as a proposition to test through Oreimo, Japanese and light, not as a finished interpretation.
Why this record matters
The phrase “japanese light novel series” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Attribution, date and provenance are strongest when supported by the original work, a catalogue record and documented transmission. The source revision retrieved here is dated Sep 15, 2026. The linked authority identifier is Q483535. None of the 1 selected statements returned an explicit reference. The first chronological checks are 2008, 2021, 2009 and 2011.
Later fame can flatten the distinction between original context, subsequent adaptation and institutional collecting history. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Separate the work, its editions or performances, and its later reception. Catalogue records, publication histories and object files often preserve different parts of that story.
- Identifying works and editions
- Tracing reception history
- Finding collection records
The original object or edition, catalogue raisonné, performance record, rights file and holding institution.
Three-step research path
- Establish the record: confirm the title “Oreimo”, its source revision and the description used here.
- Expand the search: follow Oreimo primary sources, Oreimo archive and Oreimo research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Oreimo”?
- Which edition, object, performance or recording is being described?
- Where is authorship, date or provenance documented?
Search terms from this dossier
This entry incorporates text from “Oreimo” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.