First loves are always a little childish, but that's not what fifteen-year-old Kaho Nikaidou has in mind when it turns out that her mysterious new boyfriend...is a fifth-grader?!
"Kaho isn't a thing. You can't treat girls like objects."
Although high schooler Kaho and fifth grader Kanade have started dating, Kaho is constantly at the mercy of Kanade's childish whims. And when a mysterious hottie with a Kansai accent - whom Kanade happens to call "Aniki" - arrives, will unimaginable trials await the couple's blossoming love?!
A fast-paced super-love comedy filled with madcap heart-throbbing mayhem!