Okitegami Kyouko is a famous detective who solves cases in a single day. In fact, she has to, since her memories only last for one day before they ‘reset.’ However, for important things, she writes messages for herself down on her body with a special pen. One of her common clients is Kakushidate Yakusuke, a man who is often wrongly suspected of committing crimes.

v1. Okitegami Kyouko no Bibouroku (The Memorandum of Okitegami Kyouko)
v2. Okitegami Kyouko no Suisenbun (The Testimonial of Okitegami Kyouko)
v3. Okitegami Kyouko no Chousenjou (The Challenge of Okitegami Kyouko)
v4. Okitegami Kyouko no Yuigonsho (The Testament of Okitegami Kyouko)
v5. Okitegami Kyouko no Taishokugan (The Retirement Form of Okitegami Kyouko)
v6. Okitegami Kyouko no Kon’intodoke (The Marriage Registration of Okitegami Kyouko)
v7. Okitegami Kyouko no Kakeibo (The Finance Book of Okitegami Kyouko)
v8. Okitegami Kyouko no Ryokouki (The Travel Log of Okitegami Kyouko)
v9. Okitegami Kyouko no Urabyoushi (The Back Cover of Okitegami Kyouko)
v10. Okitegami Kyouko no Iromihon (The Color Sample of Okitegami Kyouko)