A Katsu · k.A. · Katsu Aki · Katsu Alma
| title | ISBN-13 | year of publication |
|---|---|---|
| Step Up Love Story Sex Guide 1 | 978-2-84599-742-4 | 2007 |
| Step Up Love Story T19 | 978-2-84599-722-6 | 2007 |
| Step Up Love Story T20 | 978-2-84599-741-7 | 2007 |
| Step Up Love Story T23 | 978-2-84599-819-3 | 2008 |
| Upotrebitel' | 978-5-699-75626-1 | 2014 |