I Kissed My Girlfriend's Little Sister?!
Japanese light novel series
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I Kissed My Girlfriend's Little Sister?! (Japanese: カノジョの妹とキスをした。, Hepburn: Kanojo no Imōto to Kiss o Shita), or Imo Kiss (いもキス), is a Japanese light novel series written by Riku Misora and illustrated by Saba Mizore. SB Creative published the series in four volumes from April 2020 to September 2022. A manga adaptation, illustrated by Kakito Kato, began serialization on the Manga UP! website in May 2022. As of December 2025, the manga's individual chapters have been collected into three volumes.
| I Kissed My Girlfriend's Little Sister?! | |
Cover of the first light novel volume | |
| カノジョの妹とキスをした。 (Kanojo no Imōto to Kiss o Shita) | |
|---|---|
| Genre | Romantic comedy[1] |
| Light novel | |
| Written by | Riku Misora |
| Illustrated by | Saba Mizore |
| Published by | SB Creative |
| English publisher |
|
| Imprint | GA Bunko |
| Original run | April 14, 2020 – September 14, 2022 |
| Volumes | 4 |
| Manga | |
| Written by | Riku Misora |
| Illustrated by | Kakito Kato |
| Published by | Square Enix |
| Magazine | Manga UP! |
| Original run | May 28, 2022 – present |
| Volumes | 3 |
Plot
Media
Light novel
Written by Riku Misora and illustrated by Saba Mizore, the series began publication under SB Creative's GA Bunko light novel imprint on April 14, 2020.[1] The series was completed in its fourth volume, which released on September 14, 2022.[2]
Tentai Books published the first volume of the series in English.[2]
Volumes
| No. | Original release date | Original ISBN | English release date | English ISBN |
|---|---|---|---|---|
| 1 | April 14, 2020[1] | 978-4-8156-0631-2 | October 4, 2022[3] | 978-84-19056-03-0 |
| 2 | September 11, 2020[4] | 978-4-8156-0728-9 | — | — |
| 3 | September 14, 2021[5] | 978-4-8156-1225-2 | — | — |
| 4 | September 14, 2022[6] | 978-4-8156-1458-4 | — | — |
Manga
A manga adaptation, illustrated by Kakito Kato, began serialization on Square Enix's Manga UP! website on May 28, 2022.[7] As of December 2025, the series' individual chapters have been collected into three tankōbon volumes.[8]
Volumes
| No. | Japanese release date | Japanese ISBN |
|---|---|---|
| 1 | October 6, 2022[9] | 978-4-7575-8193-7 |
| 2 | October 6, 2023[10] | 978-4-7575-8841-7 |
| 3 | December 5, 2025[8] | 978-4-301-00214-7 |
Reception
In the 2021 edition of the Kono Light Novel ga Sugoi! guidebook, the series ranked eighth in the bunkobon category and fifth in the new work category.[11]
Thomas Knight of NookGaming praised the setting and contrast between the two love interests in a review of the light novel[12] and Tentai Books stated that I Kissed My Girlfriend's Little Sister?! has sold better than any of their other titles to date in an interview.[13]