Anedoki (あねどきっ, "Older Sister Startle") is a Japanese manga series written and illustrated by Mizuki Kawashita.
The series follows Kouta Ochiai, a 13-year-old boy who encounters a 17-year-old mysterious girl named Natsuki Hagiwara on his way home from school.
She asks him if he is willing to share his ice cream and calls him a pervert after noticing and wondering what Kouta was thinking when she was eating.
Natsuki then decides to repay the favor for the ice cream by taking care of Kouta while his father is gone.
[4] Shueisha collected its chapters in three tankōbon volumes published from December 4, 2009,[5] to April 2, 2010.