Girlfriend, Girlfriend , also known as KanoKano (カノかの) for short, is a Japanese romantic comedy manga series written and illustrated by Hiroyuki. It was serialized in Kodansha's shōnen manga magazine Weekly Shōnen Magazine from March 2020 to May 2023, with its chapters collected in sixteen tankōbon volumes. The series focuses on a high school student who engages in a polyamorous relationship with his childhood friend and another girl who confessed her feelings for him.