Kiss X Sis is a Japanese manga series written and illustrated by Bow Ditama. It began serialization in Kodansha’s Bessatsu Young Magazine in December 2005. It was then moved and serialized in Weekly Young Magazine from 2008 to 2009, and was serialized in Monthly Young Magazine from 2009 to 2021. Kodansha collected its chapters in twenty-five tankōbon volumes. It was adapted into an original video animation series, released from December 2008 to April 2015. A 12-episode anime television series by Feel aired from April to June 2010 on AT-X.
When Keita Suminoe’s father remarried, not only did he gain a new mother, but elder twin sisters as well. Distinct yet similar, the homely and mature Ako is a former student council president, while the athletic and aloof Riko is the previous disciplinary president. The three of them have been together since kindergarten, resulting in a deep bond between the siblings. However, over time, their relationship developed into something more romantic—and erotic .
Kiss X Sis: Now in his last year of middle school, Keita has already received a sports recommendation, but it’s from a different high school than his two sisters. Disappointed, both sisters try to change his mind, and he agrees, giving in to their desperate pleas. Unaware of the consequences, he now has to attempt to study for his high school exams while warding off the advances of his lust-driven sisters. With their parent’s blessings, Ako and Riko strive to be Keita’s future wife, leaving him to try his best to keep the relationship between them strictly platonic. However, with two beautiful girls vying for his attention, will Keita be able to withstand the endless temptations?