| title | ISBN-13 | year of publication |
|---|---|---|
| 憐 Ren ~routine~ ren Ren ~routine~ | 978-4-04-470803-0 | 2005 |
| 憐 Ren 刻のナイフと空色のミライ ren Ren kizanonaifutosoraironomirai | 978-4-04-470801-6 | 2004 |
| 憐 Ren 錆びゆくココロと月色のナミダ ren Ren sabiyukukokorotogesshokunonamida | 978-4-04-470802-3 | 2005 |
| 憐 Ren―遠いキモチと風色のソラ ren Ren―doh/ | 978-4-04-470804-7 | 2005 |